APA (7th ed.) Citation

Smith, E. E., & Medin, D. L. (1981). Categories and concepts. Harvard University Press.

Chicago Style (17th ed.) Citation

Smith, Edward E., and Douglas L. Medin. Categories and Concepts. Cambridge (Massachusetts) [etc.]: Harvard University Press, 1981.

MLA (9th ed.) Citation

Smith, Edward E., and Douglas L. Medin. Categories and Concepts. Harvard University Press, 1981.