Boyce, W. E., & DiPrima, R. C. (2009). Elementary differential equations (Ninth edition.). AUWSF.
Lua i Stíl Chicago (17ú heag.)Boyce, William E., agus Richard C. DiPrima. Elementary Differential Equations. Ninth edition. Hoboken: AUWSF, 2009.
Lua MLA (9ú heag.)Boyce, William E., agus Richard C. DiPrima. Elementary Differential Equations. Ninth edition. AUWSF, 2009.
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