Gaya APA

Cooper, D, R., Schindler, P, S. (2014). Business Research Methods 12th Ed (12th Ed). United Stated of America: McGraw-Hill, Inc.

Gaya MLA

Cooper, Donald, R., Schindler, Pamela, S. "Business Research Methods 12th Ed". 12th Ed United Stated of America: McGraw-Hill, Inc, 2014. Text.