Abedi, A., Lebadi, Z. & Saei, I. (2016). A review of the content of experimental science courses in the field of environmental education. Behavioral Sciences Journal, 29, 97-130. [In Persian]
Akomolafe, C. (2011). Impact of Personal Factors on Environmental Education in Tertiary Institutions in Ekiti State. Nigeria, International Journal forCross-Disciplinary Subjects in Education (IJCDSE), Special Issue, 1(1),559-564.
Alipour Moqadam, Kh. & Alipour Moqadam, H. (2016). Evaluation of Environmental Training in Primary School Text Books. Environmental Law Juournal, 1 (2), 30-37.[In Persian]
Alp, E., Ertepinar, H., Tekkaya, C. and Yilmaz, A. (2006) A Statistical Analysis of Children’s Environmental Knowledge and Attitude in Turkey. International research in geographicand environmental knowledge, 15(3), 210-223
Bahrani, M. (2017). A review of the research on the content analysis of textbooks in Iran. Journal of Research Approaches in the Social Sciences (Third year), 21, 209-231. [In Persian]
Berelson, B. (1971). Content Analysis in communication Research, NewYork: Hafner
Campbell, J., Waliczek, T, and Zajicek, J. (1999). Relationship between Environmental Knowledge and Environmental Attitude of High School Students.The Journal of Environmental Education, 30 (3), 17-21.
Drisko, J. & Maschi, T. (2015).Content analysis: Pocket guide to social work research. New York: Oxford University Press.
Ghaedi, M. R. and Golshani, A. (2016). Content analysis method, from quantitative to qualitative, methods and psychological models, 7 (23), 57 -82. [In Persian]
Hassan Moradi, N. (2009). Content Analysis of Textbook. Tehran: Aeejh Publishing. [In Persian]
Jamali TazeKand, M., Talebzadeh Nobarian, M. and Abolghasemi, M. (2013). Analysis of the components position of citizenship education in the content of the secondary school social science curriculum, 10, 1-19. [In Persian]
Kazemi, R. (2016). Studying and analyzing content of elementary school books with emphasis on learning high levels of cognition. Jundishapour Training development, 7, 12-19. [In Persian]
Kracauer, S. (1952). The Challenge of Qualitative Content Analysis. Public Opinion Quarterly, 16, (4), 631–642.
Mahmoodi, S. (2017). Content Analysis of Heavenly Gifts Elementary Textbooks in Term of Concerns About Environmental Ethics. QAIIE
, 3 (3):131-162.URL: http://qaiie.ir/article-1-196-fa.html
Mayring, Ph. (2000). Qualitative Content Analysis. Forum Qualitative Sozialforschung. Qualitative Social Research. 1(2): 1-6.
Mohammadi Mehr, Gh. (2008). Content Analysis (Practical Guide for Research), Ganjaneh Publications, Human Sciences, Daneshghagh, First Edition. [In Persian]
Mohsenianrad, M. (2011). Analyzing deep content and implementing it through my software. R. P. Journal of Social Studies of Iran, 5 (2), 128-157. [In Persian]
Nazemi Ardakani, B., Chaleh, Sh., Hatefi, N. & Kargar, R. (2016). Content analysis of social studies textbooks of third grade elementary school based on education of environmental components. The first national conference on the education system, Islamic Azad University, Ardakan Branch,
. [In Persian]
Nick Nafs, S. and Ali Abadi, Kh. (2013). Content analysis in the process of teaching and designing textbooks. World Media Magazine, 8 (2,16), 124-150. [In Persian]
Parishani N., Mirshah Jafari, E., Sharifian, F. and Farhadian M. (2017). The investigation of current and desirable situation of curriculum goals of the high school’s environmental education in Iran according to views of specialists in the fields of curriculum and environment. Training & Learning Researches. 2017; 13 (2), 47-59. [In Persian]
Salehi Omraan, E., Aabedini Beltork, M. and Mehralitabaar Firoozjaa’I, G. (2018) Content Analysis of Elementary School Textbooks in Terms of Covering Renewable Energy Sources. QJOE, 34 (1), 75-94. [In Persian]
Shobeiri, S. M. and Haghighi, F. (2015). Methods for Teaching Environmental Education, Payam Noor University Press, First Edition. [In Persian]
The American Textbook Council. (2009). Review Guidelines. [Online] From: http://www.historytextbooks.org/review.htm.Date: 6/8/2009.
Wood, L. (2002). An overview of three different approaches to the interpretation of qualitative data, part! Theoretical illustration. Nurse Research,10(1), 43-51.
Yazdani, F. (2017). Categorization of Content Quality Indicators Content of Elementary School Textbooks. Educational and evaluation journal, 10 (37), 83-106. [In Persian]
Zhang, Y. and Wildemuth, B. M. (2009). Qualitative Analysis of Content. In: B. M. Wildemuth, Ed., Applications of Social Research Methods to Questions in Information and Library Science, Libraries Unlimited, 2009. pp. 1-12.