APA
Perlita P. Romero & Pacelli S. Eugenio, . (1997). Principles of Speech and Oral Communication. Quezon City: Katha Publishing Co., Inc.
Chicago
Perlita P. Romero & Pacelli S. Eugenio, . 1997. Principles of Speech and Oral Communication. Quezon City: Katha Publishing Co., Inc.
Harvard
Perlita P. Romero & Pacelli S. Eugenio, . (1997). Principles of Speech and Oral Communication. Quezon City: Katha Publishing Co., Inc.
MLA
Perlita P. Romero & Pacelli S. Eugenio, . Principles of Speech and Oral Communication. Quezon City: Katha Publishing Co., Inc. 1997.
