Romero, P. P. (1997). Principles of speech and oral communication. Katha.
Chicagoスタイル(17版)引用形式Romero, Perlita P. Principles of Speech and Oral Communication. Quezon City: Katha, 1997.
MLA(9版)引用形式Romero, Perlita P. Principles of Speech and Oral Communication. Katha, 1997.
警告: この引用は必ずしも正確ではありません.