Cita APA

Carnegie, D. 1., & Carnegie, D. 1. (1970). How to develop self-confidence and influence people by public speaking (21st printing.). New York: Pocket Books.

Citación estilo Chicago

Carnegie, Dale 1888-1955, and Dorothy 1912-1998 Carnegie. How to Develop Self-confidence and Influence People By Public Speaking. 21st printing. New York: Pocket Books, 1970.

Cita MLA

Carnegie, Dale 1888-1955, and Dorothy 1912-1998 Carnegie. How to Develop Self-confidence and Influence People By Public Speaking. 21st printing. New York: Pocket Books, 1970.