Gaya APA

FRAENKEL, J, R., WALLEN, N, E. (2008). How to Design and Evaluate Research in Education 7ed (7). Boston: McGraw-Hill.

Gaya MLA

FRAENKEL, Jack, R.., WALLEN, Norman, E.. "How to Design and Evaluate Research in Education 7ed". 7 Boston: McGraw-Hill, 2008. Printed.