Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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