APA (7th ed.) Zitazioa
Prochnow, H. (2005). 1001 ways to improve your conversation and speeches. Jaico Pub.
Chicago Style (17th ed.) Zitazioa
Prochnow, Herbert. 1001 Ways to Improve Your Conversation and Speeches. Kolkata: Jaico Pub, 2005.
MLA (9th ed.) Zitazioa
Prochnow, Herbert. 1001 Ways to Improve Your Conversation and Speeches. Jaico Pub, 2005.
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