APA-viite

Barker, A. (2008). Improve your communication skills (2nd ed.). Kogan Page.

Chicago-tyylinen lähdeviittaus

Barker, Alan. Improve Your Communication Skills. 2nd ed. New Delhi: Kogan Page, 2008.

MLA-viite

Barker, Alan. Improve Your Communication Skills. 2nd ed. Kogan Page, 2008.