APA-referens (7:e uppl.)

Clay, R. M. (1909). The mediaeval hospitals of England. Methuen & co.

Chicago-referens (17:e uppl.)

Clay, Rotha Mary. The Mediaeval Hospitals of England. London: Methuen & co, 1909.

MLA-referens (8:e uppl.)

Clay, Rotha Mary. The Mediaeval Hospitals of England. Methuen & co, 1909.