APA (7th ed.) Citation

Stroll, A., & Popkin, R. H. (1973). Philosophy and the human spirit: A brief introduction. Holt.

Chicago Style (17th ed.) Citation

Stroll, Avrum, and Richard Henry Popkin. Philosophy and the Human Spirit: A Brief Introduction. New York: Holt, 1973.

MLA (9th ed.) Citation

Stroll, Avrum, and Richard Henry Popkin. Philosophy and the Human Spirit: A Brief Introduction. Holt, 1973.