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.
Citazione stile Chigago Style (17a edizione)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.
Citatione MLA (8a 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.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.