Cita APA (7th ed.)

Burton & Robert G. (1980). Philosophy: A Literary and Conceptual Approach (2nd ed.). Harcourt Brace Jovanovich.

Cita Chicago (17th ed.)

Burton i Robert G. Philosophy: A Literary and Conceptual Approach. 2nd ed. New York: Harcourt Brace Jovanovich, 1980.

Cita MLA (9th ed.)

Burton i Robert G. Philosophy: A Literary and Conceptual Approach. 2nd ed. Harcourt Brace Jovanovich, 1980.