Solomon, R. C., & Higgins, K. M. (2014). The Big questions: A short introduction to philosophy (Ninth edition, International edition.). Wadsworth Cengage Learning.
Citace podle Chicago (17th ed.)Solomon, Robert C., a Kathleen Marie Higgins. The Big Questions: A Short Introduction to Philosophy. Ninth edition, International edition. Australia: Wadsworth Cengage Learning, 2014.
Citace podle MLA (9th ed.)Solomon, Robert C., a Kathleen Marie Higgins. The Big Questions: A Short Introduction to Philosophy. Ninth edition, International edition. Wadsworth Cengage Learning, 2014.
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