Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Kolak, Daniel, Raymond Martin, i William Paterson. Wisdom Without Answers: A Brief Introduction to Philosophy. 4th ed. Belmont, CA: Wadsworth, 1999.

Cita MLA (9th ed.)

Kolak, Daniel, et al. Wisdom Without Answers: A Brief Introduction to Philosophy. 4th ed. Wadsworth, 1999.