Cozby, P. C. (1985). Methods in behavioral research (3rd.ed.). Mayfield.
Chicago Style (17th ed.) ZitazioaCozby, Paul C. Methods in Behavioral Research. 3rd.ed. Palo Alto: Mayfield, 1985.
MLA (9th ed.) ZitazioaCozby, Paul C. Methods in Behavioral Research. 3rd.ed. Mayfield, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.