APA-referens (7:e uppl.)

Hilbert, D. (1947). The Foundations of geometry. The Open Court.

Chicago-referens (17:e uppl.)

Hilbert, David. The Foundations of Geometry. Illinois: The Open Court, 1947.

MLA-referens (9:e uppl.)

Hilbert, David. The Foundations of Geometry. The Open Court, 1947.