APA aipamena

Cooper, D. R., & Schindler, P. S. (2011). Business research methods (11th ed.). New York: McGraw-Hill/Irwin.

Chicago Style aipamena

Cooper, Donald R., và Pamela S. Schindler. Business Research Methods. 11th ed. New York: McGraw-Hill/Irwin, 2011.

MLA aipamena

Cooper, Donald R., và Pamela S. Schindler. Business Research Methods. 11th ed. New York: McGraw-Hill/Irwin, 2011.