Cita APA (7th ed.)

Beck, L. W., & Holmes, R. L. (1968). Philosophic inquiry: An introduction to philosophy (2nd ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Beck, Lewis White, i Robert L. Holmes. Philosophic Inquiry: An Introduction to Philosophy. 2nd ed. Englewood Cliffs, New Jersey: Prentice-Hall, 1968.

Cita MLA (9th ed.)

Beck, Lewis White, i Robert L. Holmes. Philosophic Inquiry: An Introduction to Philosophy. 2nd ed. Prentice-Hall, 1968.