Gaya APA

Cooper, D, R., Schidler, P, S. (2003). Business Research Methods (Kedelapan). Yogyakarta: Salemba Empat.

Gaya MLA

Cooper, Donald, R.., Schidler, Pamela, S.. "Business Research Methods". Kedelapan Yogyakarta: Salemba Empat, 2003. Text.