APA (7th ed.) Zitazioa
Fraenkel, J. R., & Wallen, N. E. (2003). How to design and evaluate research in education (5th ed.). McGraw-Hill Higher Education.
Chicago Style (17th ed.) Zitazioa
Fraenkel, Jack R., eta Norman E. Wallen. How to Design and Evaluate Research in Education. 5th ed. Boston: McGraw-Hill Higher Education, 2003.
MLA (9th ed.) Zitazioa
Fraenkel, Jack R., eta Norman E. Wallen. How to Design and Evaluate Research in Education. 5th ed. McGraw-Hill Higher Education, 2003.
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