Citazione Stile APA (7a Edizione)

Heiman, G. W. (1999). Research methods in psychology (2nd ed.). Houghton Mifflin.

Citazione stile Chigago Style (17a edizione)

Heiman, Gary W. Research Methods in Psychology. 2nd ed. Boston: Houghton Mifflin, 1999.

Citatione MLA (9a ed.)

Heiman, Gary W. Research Methods in Psychology. 2nd ed. Houghton Mifflin, 1999.