APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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