Hatfield, L. L., Johnson, D. C., & Hatfield, L. L. (1969). Computer assisted mathematics program: Second course. Scott, Foresman.
Cita Chicago Style (17a ed.)Hatfield, Larry L., David C. Johnson, y Larry L. Hatfield. Computer Assisted Mathematics Program: Second Course. Glenview: Scott, Foresman, 1969.
Cita MLA (9a ed.)Hatfield, Larry L., et al. Computer Assisted Mathematics Program: Second Course. Scott, Foresman, 1969.
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