Witter, G. E. (1964). Mathematics: The study of axiom systems. Blaisdell Publishing.
Cita Chicago (17th ed.)Witter, George E. Mathematics: The Study of Axiom Systems. New York: Blaisdell Publishing, 1964.
Cita MLA (9th ed.)Witter, George E. Mathematics: The Study of Axiom Systems. Blaisdell Publishing, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.