Cozby, P. C. (1985). Methods in behavioral research (3rd.ed.). Mayfield.
Cita Chicago (17th ed.)Cozby, Paul C. Methods in Behavioral Research. 3rd.ed. Palo Alto: Mayfield, 1985.
Cita MLA (9th ed.)Cozby, Paul C. Methods in Behavioral Research. 3rd.ed. Mayfield, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.