APA aipamena

McKenna, C. (1998). Powerful communication skills: How to communicate with confidence. Franklin Lakes, N.J: Career Press.

Chicago Style aipamena

McKenna, Colleen. Powerful Communication Skills: How to Communicate With Confidence. Franklin Lakes, N.J: Career Press, 1998.

MLA aipamena

McKenna, Colleen. Powerful Communication Skills: How to Communicate With Confidence. Franklin Lakes, N.J: Career Press, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.