MLA

Hallpike, C. S, and H Cairns. Observations On the Pathology of Ménière's Syndrome. 1938.

APA

Hallpike, C. S, & Cairns, H. (1938). Observations on the pathology of ménière's syndrome. .

Chicago

Hallpike, C. S., and H Cairns. Observations On the Pathology of Ménière's Syndrome.