APA (7 वां संस्करण) प्रशस्ति पत्र

COOPER, D. R. &. O. (2012). BUSINESS RESEARCH METHODS (4TH.).

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

COOPER, DONALD R. & OTHERS. BUSINESS RESEARCH METHODS. 4TH. NEWDELHI, 2012.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

COOPER, DONALD R. & OTHERS. BUSINESS RESEARCH METHODS. 4TH. 2012.