Παραπομπή APA

Cooper. (1995). Business research methods/5e (5th ed.). Irwin.

Παραπομπή Chicago Style

Cooper. Business Research Methods/5e. 5th ed. London: Irwin, 1995.

Παραπομπή MLA

Cooper. Business Research Methods/5e. 5th ed. Irwin, 1995.