APA (7. basım) Alıntı

Butterfield, J. (2010). Verbal communication. Course Technology, Cengage Learning.

Chicago Style (17. basım) Atıf

Butterfield, Jeff. Verbal Communication. Australia: Course Technology, Cengage Learning, 2010.

MLA (9th ed.) Atıf

Butterfield, Jeff. Verbal Communication. Course Technology, Cengage Learning, 2010.