APA-referens (7:e uppl.)

Villamarzo, P. C., Cruz, E. E., & Relis, J. G. (2003). Functional oral communication (Rev. ed.). University of Santo Tomas Pub. House.

Chicago-referens (17:e uppl.)

Villamarzo, Perla C., Estrella E. Cruz, och Josephine G. Relis. Functional Oral Communication. Rev. ed. Manila: University of Santo Tomas Pub. House, 2003.

MLA-referens (9:e uppl.)

Villamarzo, Perla C., et al. Functional Oral Communication. Rev. ed. University of Santo Tomas Pub. House, 2003.