APA (7th ed.) Citation

Devito, J. A. The public speaking guide. HarperCollins College Publishers.

Chicago Style (17th ed.) Citation

Devito, Joseph A. The Public Speaking Guide. New York: HarperCollins College Publishers.

MLA (9th ed.) Citation

Devito, Joseph A. The Public Speaking Guide. HarperCollins College Publishers.

Warning: These citations may not always be 100% accurate.