Cita APA (7a ed.)

Santayana, G. (1955). Scepticism and animal faith: Introducion to a system of philosophy. Dover Publications.

Cita Chicago Style (17a ed.)

Santayana, George. Scepticism and Animal Faith: Introducion to a System of Philosophy. [New York]: Dover Publications, 1955.

Cita MLA (9a ed.)

Santayana, George. Scepticism and Animal Faith: Introducion to a System of Philosophy. Dover Publications, 1955.