HAIMOS, P. R. (1974). Naive set theory. Springer- verlag.
Cita Chicago (17th ed.)HAIMOS, Paul R. Naive Set Theory. New york: Springer- verlag, 1974.
Cita MLA (9th ed.)HAIMOS, Paul R. Naive Set Theory. Springer- verlag, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.