Cita APA (7th ed.)
Prochnow, H. (2005). 1001 ways to improve your conversation and speeches. Jaico Pub.
Cita Chicago (17th ed.)
Prochnow, Herbert. 1001 Ways to Improve Your Conversation and Speeches. Kolkata: Jaico Pub, 2005.
Cita MLA (9th ed.)
Prochnow, Herbert. 1001 Ways to Improve Your Conversation and Speeches. Jaico Pub, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.