Barker, L. L., & Gaut, D. A. (1993). Communication (6th ed.). Prentice-Hall.
Chicago Style aipamenaBarker, Larry Lee, and Deborah A. Gaut. Communication. 6th ed. Englewood Cliffs, N.J.: Prentice-Hall, 1993.
MLA aipamenaBarker, Larry Lee, and Deborah A. Gaut. Communication. 6th ed. Prentice-Hall, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.