Pengilley, P. (1968). By word of mouth: A rehabilitation course in better hearing, lip reading and speech conversation, Australian triple approach. Australian Association for Better Hearing.
Cita Chicago (17th ed.)Pengilley, Patricia. By Word of Mouth: A Rehabilitation Course in Better Hearing, Lip Reading and Speech Conversation, Australian Triple Approach. [Melbourne: Australian Association for Better Hearing, 1968.
Cita MLA (8th ed.)Pengilley, Patricia. By Word of Mouth: A Rehabilitation Course in Better Hearing, Lip Reading and Speech Conversation, Australian Triple Approach. Australian Association for Better Hearing, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.