Fraenkel, A. A., & Bar-Hillel, Y. (1958). Foundations of set theory. Amsterdam: North-Holland Publishing Company.
Παραπομπή Chicago StyleFraenkel, Abraham A., and Yehoshua Bar-Hillel. Foundations of Set Theory. Amsterdam: North-Holland Publishing Company, 1958.
Παραπομπή MLAFraenkel, Abraham A., and Yehoshua Bar-Hillel. Foundations of Set Theory. Amsterdam: North-Holland Publishing Company, 1958.
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