Cita APA (7a ed.)

Barker, S. F. (1964). Philosophy of mathematics. Prentice-Hall.

Cita Chicago Style (17a ed.)

Barker, Stephen Francis. Philosophy of Mathematics. Englewood Cliffs, New Jersey: Prentice-Hall, 1964.

Cita MLA (9a ed.)

Barker, Stephen Francis. Philosophy of Mathematics. Prentice-Hall, 1964.