APA (7th ed.) Citation

Smith, P. K. (1984). Play in animals and humans. New York, NY, USA : B. Blackwell.

Chicago Style (17th ed.) Citation

Smith, Peter K. Play in Animals and Humans. Oxford, England: New York, NY, USA : B. Blackwell, 1984.

MLA (9th ed.) Citation

Smith, Peter K. Play in Animals and Humans. New York, NY, USA : B. Blackwell, 1984.

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