Citazione Stile APA (7a Edizione)

Bowie, G. L., Michaels, M. W., & Solomon, R. C. (1992). Twenty questions: An introduction to philosophy (2d ed.). Harcourt Brace Jovanovich College Publishers.

Citazione stile Chigago Style (17a edizione)

Bowie, G. Lee, Meredith W. Michaels, e Robert C. Solomon. Twenty Questions: An Introduction to Philosophy. 2d ed. Fort Worth: Harcourt Brace Jovanovich College Publishers, 1992.

Citatione MLA (9a ed.)

Bowie, G. Lee, et al. Twenty Questions: An Introduction to Philosophy. 2d ed. Harcourt Brace Jovanovich College Publishers, 1992.