Spatz, C. (2008). Research methods in psychology: Ideas, techniques, and reports. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Spatz, Chris. Research Methods in Psychology: Ideas, Techniques, and Reports. McGraw-Hill, 2008.
Lua MLA (8ú heag.)Spatz, Chris. Research Methods in Psychology: Ideas, Techniques, and Reports. McGraw-Hill, 2008.
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