Bowie, G. L., Michaels, M. W., & Solomon, R. C. (1992). Twenty questions: An introduction to philosophy (2d ed.). Harcourt Brace Jovanovich College Publishers.
Chicago Style aipamenaBowie, G. Lee, Meredith W. Michaels, and Robert C. Solomon. Twenty Questions: An Introduction to Philosophy. 2d ed. Fort Worth: Harcourt Brace Jovanovich College Publishers, 1992.
MLA aipamenaBowie, G. Lee, et al. Twenty Questions: An Introduction to Philosophy. 2d ed. Harcourt Brace Jovanovich College Publishers, 1992.
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