MLA

Davies, Nancy, and Ursel Isenburg. Standard Radiographic Positions. London: Bailliere, Tindall & Cox, 1947.

APA

Davies, N., & Isenburg, U. (1947). Standard radiographic positions. London: Bailliere, Tindall & Cox.

Chicago

Davies, Nancy, and Ursel Isenburg. Standard Radiographic Positions. London: Bailliere, Tindall & Cox, 1947.