APA

Hilbert D., Hilbert D. & Townsend E. J. (1950). The foundations of geometry. LaSalle, Ill: Open Court Publishing Company.

Chicago

Hilbert David, Hilbert David and Townsend E J. 1950. The foundations of geometry. LaSalle, Ill: Open Court Publishing Company.

Harvard

Hilbert D., Hilbert D. and Townsend E. J. (1950). The foundations of geometry. LaSalle, Ill: Open Court Publishing Company.

MLA

Hilbert David, Hilbert David and Townsend E J. The foundations of geometry. LaSalle, Ill: Open Court Publishing Company. 1950.