Court, N. A. (1964). Mathematics in fun and in earnest. Dial press, Inc..
Chicago-čujuhus (17. p.)Court, Nathan Altshiller. Mathematics in Fun and in Earnest. New yORK: Dial press, Inc., 1964.
MLA-čujuhus (9. p.)Court, Nathan Altshiller. Mathematics in Fun and in Earnest. Dial press, Inc., 1964.
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