Gaya APA

FRAENKEL, J, R., WALLEN, N, E. (2006). HOW TO DESIGN AND EVALUATE RESEARCH IN EDUCATION (Ed.5). New York: MC GRAW HILL.

Gaya MLA

FRAENKEL, JACK, R.., WALLEN, NORMAN, E.. "HOW TO DESIGN AND EVALUATE RESEARCH IN EDUCATION". Ed.5 New York: MC GRAW HILL, 2006. Text.