Styl cytowania APA

Bob. (2009). Fire up your communication skills/2e (2nd ed.). Viva books.

Styl cytowania Chicago

Bob. Fire Up Your Communication Skills/2e. 2nd ed. New Delhi: Viva books, 2009.

Styl cytowania MLA

Bob. Fire Up Your Communication Skills/2e. 2nd ed. Viva books, 2009.