APA aipamena

De Guzman, J. A. (1991). Vital choices. Philippine Collegian.

Chicago Style aipamena

De Guzman, Joseph Angelo. "Vital Choices." Philippine Collegian 1991.

MLA aipamena

De Guzman, Joseph Angelo. "Vital Choices." Philippine Collegian, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.