May, T. (2011). Social research: Issues, methods and process (4th ed.). McGraw Hill.
Citace podle Chicago (17th ed.)May, Tim. Social Research: Issues, Methods and Process. 4th ed. Maidenhead, England: McGraw Hill, 2011.
Citace podle MLA (9th ed.)May, Tim. Social Research: Issues, Methods and Process. 4th ed. McGraw Hill, 2011.
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