Cita APA (7th ed.)

Romero, P. P. (1997). Principles of speech and oral communication. Katha.

Cita Chicago (17th ed.)

Romero, Perlita P. Principles of Speech and Oral Communication. Quezon City: Katha, 1997.

Cita MLA (9th ed.)

Romero, Perlita P. Principles of Speech and Oral Communication. Katha, 1997.