APA-referens (7:e uppl.)

Frey, L. R., Botan, C. H., & Kreps, G. L. (2000). Investigating communication: An introduction to research methods (2nd ed.). Allyn and Bacon.

Chicago-referens (17:e uppl.)

Frey, Lawrence R., Carl H. Botan, och Gary L. Kreps. Investigating Communication: An Introduction to Research Methods. 2nd ed. Boston: Allyn and Bacon, 2000.

MLA-referens (9:e uppl.)

Frey, Lawrence R., et al. Investigating Communication: An Introduction to Research Methods. 2nd ed. Allyn and Bacon, 2000.