Cita APA (7th ed.)

de Guzman, M. O. (1980). The Filipino heroes. National Book Store.

Cita Chicago (17th ed.)

de Guzman, Maria Odulio. The Filipino Heroes. Manila: National Book Store, 1980.

Cita MLA (9th ed.)

de Guzman, Maria Odulio. The Filipino Heroes. National Book Store, 1980.