Gaya APA

Fraenkel, J, R., Wallen, N, E. (2012). How to Design and Evaluate Research in Education (Ed. 9.). New York: McGraw Hill.

Gaya MLA

Fraenkel, Jack, R.., Wallen, Norman, E,. "How to Design and Evaluate Research in Education". Ed. 9. New York: McGraw Hill, 2012. Text.