Cozby, P. C. (1981). Methods in behavioral research (2nd ed.). Mayfield.
Cita Chicago Style (17a ed.)Cozby, Paul C. Methods in Behavioral Research. 2nd ed. Palo Alto, Cal: Mayfield, 1981.
Cita MLA (9a ed.)Cozby, Paul C. Methods in Behavioral Research. 2nd ed. Mayfield, 1981.
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