MLA

French, Herbert, and Arthur Henry Douthwaite. French's Index of Differential Diagnosis. 7th ed. / edited by Arthur H. Douthwaite Bristol: Wright, 1965.

APA

French, H., & Douthwaite, A. Henry. (1965). French's index of differential diagnosis. 7th ed. / edited by Arthur H. Douthwaite Bristol: Wright.

Chicago

French, Herbert, French's Index of Differential Diagnosis. Edited by Arthur Henry Douthwaite. 7th ed. / edited by Arthur H. Douthwaite Bristol: Wright, 1965.