American Psychological Association & Cooper, H. M. (2012). APA handbook of research methods in psychology. American Psychological Association.
Čikaški stil citiranja (17. izdanje)American Psychological Association i Harris M. Cooper. APA Handbook of Research Methods in Psychology. Washington, DC: American Psychological Association, 2012.
MLA način citiranja (9. izdanje)American Psychological Association i Harris M. Cooper. APA Handbook of Research Methods in Psychology. American Psychological Association, 2012.
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