Citace podle APA (7th ed.)
Smith, D. E. Number stories of long ago. The National Council of Teaches of mathematics.
Citace podle Chicago (17th ed.)
Smith, David Eugene. Number Stories of Long Ago. Washingtong: The National Council of Teaches of mathematics.
Citace podle MLA (9th ed.)
Smith, David Eugene. Number Stories of Long Ago. The National Council of Teaches of mathematics.
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