APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

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.

MLA (8e ed.) Bronvermelding

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.