Não informado. (1971). Language Speech and Hearing Services in Schools. American Speech-Language-Hearing Association.
Citação do estilo Chicago (17ª ed.)Não informado. Language Speech and Hearing Services in Schools. Washington: American Speech-Language-Hearing Association, 1971.
Citação MLA (8ª ed.)Não informado. Language Speech and Hearing Services in Schools. American Speech-Language-Hearing Association, 1971.
警告：这些引文格式不一定是100％准确.