Cita APA (7th ed.)
Skolem, T. A. (1962). Abstract set theory (1a. ed.). University of Notre Dame.
Cita Chicago (17th ed.)
Skolem, Thoralf A. Abstract Set Theory. 1a. ed. Indiana: University of Notre Dame, 1962.
Cita MLA (9th ed.)
Skolem, Thoralf A. Abstract Set Theory. 1a. ed. University of Notre Dame, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.