Allendoerfer, C. B., & Oakley, C. O. 1. (1969). Principles of mathematics (3rd ed.). New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleAllendoerfer, Carl B., and Cletus O. 1899- Oakley. Principles of Mathematics. 3rd ed. New York: McGraw-Hill Book Company, 1969.
Παραπομπή MLAAllendoerfer, Carl B., and Cletus O. 1899- Oakley. Principles of Mathematics. 3rd ed. New York: McGraw-Hill Book Company, 1969.
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