APA (7th ed.) Citation

Provine, R. R. (2001). Laughter: A scientific investigation. Penguin Books.

Chicago Style (17th ed.) Citation

Provine, Robert R. Laughter: A Scientific Investigation. New York: Penguin Books, 2001.

MLA (9th ed.) Citation

Provine, Robert R. Laughter: A Scientific Investigation. Penguin Books, 2001.

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