Cita APA (7a ed.)

Kolak, D., & Martin, R. (1999). Wisdom without answers: A brief introduction to philosophy (4th ed.). Wadsworth Pub.

Cita Chicago Style (17a ed.)

Kolak, Daniel, y Raymond Martin. Wisdom Without Answers: A Brief Introduction to Philosophy. 4th ed. Belmont, Calif: Wadsworth Pub, 1999.

Cita MLA (9a ed.)

Kolak, Daniel, y Raymond Martin. Wisdom Without Answers: A Brief Introduction to Philosophy. 4th ed. Wadsworth Pub, 1999.