Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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