Wilder, R. L. (1965). Introduction to the foundations of mathematics (2nd ed.). New York: John Wiley and Sons.
Παραπομπή Chicago StyleWilder, Raymond L. Introduction to the Foundations of Mathematics. 2nd ed. New York: John Wiley and Sons, 1965.
Παραπομπή MLAWilder, Raymond L. Introduction to the Foundations of Mathematics. 2nd ed. New York: John Wiley and Sons, 1965.
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