APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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