APA (7th ed.) Citation

Smith, D. R. (2012). Sociable laughter, deep laughter.

Chicago Style (17th ed.) Citation

Smith, David R. Sociable Laughter, Deep Laughter. 2012.

MLA (9th ed.) Citation

Smith, David R. Sociable Laughter, Deep Laughter. 2012.

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