Stark, R., & Roberts, L. (2002). Contemporary social research methods (3rd ed.). Wadsworth/Thomson Learning.
Citace podle Chicago (17th ed.)Stark, Rodney, a Lynne Roberts. Contemporary Social Research Methods. 3rd ed. Australia: Wadsworth/Thomson Learning, 2002.
Citace podle MLA (9th ed.)Stark, Rodney, a Lynne Roberts. Contemporary Social Research Methods. 3rd ed. Wadsworth/Thomson Learning, 2002.
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