School mathematics study group. (1959). Junior High School Mathematics Units: Volume I, Number Systems ; Commentary for Teachers. Yale University.
Citace podle Chicago (17th ed.)School mathematics study group. Junior High School Mathematics Units: Volume I, Number Systems ; Commentary for Teachers. Connecticut: Yale University, 1959.
Citace podle MLA (9th ed.)School mathematics study group. Junior High School Mathematics Units: Volume I, Number Systems ; Commentary for Teachers. Yale University, 1959.
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