Romero, P. P. (1997). Principles of speech and oral communication. Katha.
Chicago Style (17. basım) AtıfRomero, Perlita P. Principles of Speech and Oral Communication. Quezon City: Katha, 1997.
MLA (9th ed.) AtıfRomero, Perlita P. Principles of Speech and Oral Communication. Katha, 1997.
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