Cita APA (7th ed.)

Skolem, T. A. (1962). Abstract set theory. University of Notre Dame.

Cita Chicago (17th ed.)

Skolem, Thoralf A. Abstract Set Theory. Notre Dame: University of Notre Dame, 1962.

Cita MLA (9th ed.)

Skolem, Thoralf A. Abstract Set Theory. University of Notre Dame, 1962.