Keedy, M. L., & Bittinger, M. L. (1972). Essential mathematics: A modern approach. Addison-Wesley.
Cita Chicago Style (17a ed.)Keedy, Mervin L., y Marvin L. Bittinger. Essential Mathematics: A Modern Approach. Reading, Massachusetts: Addison-Wesley, 1972.
Cita MLA (8a ed.)Keedy, Mervin L., y Marvin L. Bittinger. Essential Mathematics: A Modern Approach. Addison-Wesley, 1972.
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