Cita APA (7th ed.)

Solomon, R. C. (1977). Introducing philosophy: Problems and perspectives. Harcourt Brace Jovanovich.

Cita Chicago (17th ed.)

Solomon, Robert C. Introducing Philosophy: Problems and Perspectives. New York: Harcourt Brace Jovanovich, 1977.

Cita MLA (9th ed.)

Solomon, Robert C. Introducing Philosophy: Problems and Perspectives. Harcourt Brace Jovanovich, 1977.