ALLENDOERFER, C. B. (1971). Principles of arithmetic and geometry for elementaryschool teachers. The Macmillan co.
Chicago-referens (17:e uppl.)ALLENDOERFER, Carl B. Principles of Arithmetic and Geometry for Elementaryschool Teachers. New York: The Macmillan co, 1971.
MLA-referens (9:e uppl.)ALLENDOERFER, Carl B. Principles of Arithmetic and Geometry for Elementaryschool Teachers. The Macmillan co, 1971.
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