American Psychological Association & Cooper, H. M. (2012). APA handbook of research methods in psychology. American Psychological Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Psychological Association और Harris M. Cooper. APA Handbook of Research Methods in Psychology. Washington, DC: American Psychological Association, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican Psychological Association और Harris M. Cooper. APA Handbook of Research Methods in Psychology. American Psychological Association, 2012.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.