Cita APA (7a ed.)

Stroll, A. (2009). Informal philosophy. Rowman & Littlefield Publishers.

Cita Chicago Style (17a ed.)

Stroll, Avrum. Informal Philosophy. Lanham, Md.: Rowman & Littlefield Publishers, 2009.

Cita MLA (8a ed.)

Stroll, Avrum. Informal Philosophy. Rowman & Littlefield Publishers, 2009.