Gaya APA

Fraenkel, J, R. et al (2009). How to Design and Evaluate Research in Education (7 -). New York: Mc Graw Hill-Higher Education.

Gaya MLA

Fraenkel, Jack, R.. et al. "How to Design and Evaluate Research in Education". 7 - New York: Mc Graw Hill-Higher Education, 2009. Text.