Cita APA (7th ed.)

Zulueta, F. M. (2010). Introduction to philosophy. National Book Store.

Cita Chicago (17th ed.)

Zulueta, Francisco M. Introduction to Philosophy. Mandaluyong City: National Book Store, 2010.

Cita MLA (9th ed.)

Zulueta, Francisco M. Introduction to Philosophy. National Book Store, 2010.