Citazione Stile APA (7a Edizione)

Bowie, G. L., Michaels, M. W., & Solomon, R. C. (2004). Twenty questions: An introduction to philosophy (Fifth Edition.). Harcourt College Publishers.

Citazione stile Chigago Style (17a edizione)

Bowie, G. Lee, Meredith W. Michaels, e Robert C. Solomon. Twenty Questions: An Introduction to Philosophy. Fifth Edition. Fort Worth, TX: Harcourt College Publishers, 2004.

Citatione MLA (9a ed.)

Bowie, G. Lee, et al. Twenty Questions: An Introduction to Philosophy. Fifth Edition. Harcourt College Publishers, 2004.