APA aipamena

Fraenkel, J. R., & Wallen, N. E. (2007). How to design and evaluate research in education (6th ed.). McGraw-Hill.

Chicago Style aipamena

Fraenkel, Jack R., and Norman E. Wallen. How to Design and Evaluate Research in Education. 6th ed. Boston: McGraw-Hill, 2007.

MLA aipamena

Fraenkel, Jack R., and Norman E. Wallen. How to Design and Evaluate Research in Education. 6th ed. McGraw-Hill, 2007.