American Psychological Association & Cooper, H. M. (2012). APA handbook of research methods in psychology. American Psychological Association.
Citace podle Chicago (17th ed.)American Psychological Association a Harris M. Cooper. APA Handbook of Research Methods in Psychology. Washington, DC: American Psychological Association, 2012.
Citace podle MLA (9th ed.)American Psychological Association a Harris M. Cooper. APA Handbook of Research Methods in Psychology. American Psychological Association, 2012.
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