Halmos, P. R. (1960). Naive set theory. D. van Nostrand.
Chicagoスタイル(17版)引用形式Halmos, Paul Richard. Naive Set Theory. Princeton: D. van Nostrand, 1960.
MLA(9版)引用形式Halmos, Paul Richard. Naive Set Theory. D. van Nostrand, 1960.
警告: この引用は必ずしも正確ではありません.