Halmos, P. R. (1960). Naive set theory. Van Nostrand.
Cita Chicago (17th ed.)Halmos, Paul R. Naive Set Theory. Princeton, N.J: Van Nostrand, 1960.
Cita MLA (9th ed.)Halmos, Paul R. Naive Set Theory. Van Nostrand, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.