Gaya APA

Borg, W, R., Gall, M, D. (1989). Educational Research : An Introduction Fith Edition . New York: Taylor & Francis Inc..

Gaya MLA

Borg, Walter, R.., Gall, Meredith, Damien. "Educational Research : An Introduction Fith Edition". New York: Taylor & Francis Inc., 1989. Textbook.