Betz, H., & Ewing, G. M. (1964). Differential equations with applications (2d ed.). Harper & Row.
Chicago Style (17. basım) AtıfBetz, Herman, ve George M. Ewing. Differential Equations with Applications. 2d ed. New York: Harper & Row, 1964.
MLA (8th ed.) AtıfBetz, Herman, ve George M. Ewing. Differential Equations with Applications. 2d ed. Harper & Row, 1964.
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