MLA

Kamke, Erich, and Frederick Bagemihl. Theory of Sets. New York (N.Y.): Dover, 1950.

APA

Kamke, E., & Bagemihl, F. (1950). Theory of sets. New York (N.Y.): Dover.

Chicago

Kamke, Erich, Theory of Sets. Translated by Frederick Bagemihl. New York (N.Y.): Dover, 1950.