Cita APA (7th ed.)

Petrno, P. A. (1975). Los heraldos de la raza (novela corta) [microform]. Photoduplication Service.

Cita Chicago (17th ed.)

Petrno, Pedro Alejandro. Los Heraldos De La Raza (novela Corta) [microform]. Quezon City: Photoduplication Service, 1975.

Cita MLA (9th ed.)

Petrno, Pedro Alejandro. Los Heraldos De La Raza (novela Corta) [microform]. Photoduplication Service, 1975.