APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.