MLA

Aikin, W. A, and H. St. John Rumsey. The Voice : an Introduction to Practical Phonology. New ed. / by John Rumsey London: Longmans, Green & Co, 1951.

APA

Aikin, W. A, & Rumsey, H. St. John. (1951). The voice : an introduction to practical phonology. New ed. / by John Rumsey London: Longmans, Green & Co.

Chicago

Aikin, W. A. The Voice: An Introduction to Practical Phonology. Edited by H. St. John Rumsey. New ed. / by John Rumsey London: Longmans, Green & Co, 1951.