Villamarzo, P. C., Cruz, E. E., & Relis, J. G. (2003). Functional oral communication (Rev. ed.). University of Santo Tomas Pub. House.
Chicago Style aipamenaVillamarzo, Perla C., Estrella E. Cruz, and Josephine G. Relis. Functional Oral Communication. Rev. ed. Manila: University of Santo Tomas Pub. House, 2003.
MLA aipamenaVillamarzo, Perla C., et al. Functional Oral Communication. Rev. ed. University of Santo Tomas Pub. House, 2003.
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