Zill, D. G. (2018). A first course in differential equations with modeling applications (Eleventh edition.). Cengage Learning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZill, Dennis G. A First Course in Differential Equations with Modeling Applications. Eleventh edition. Boston, MA: Cengage Learning, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रZill, Dennis G. A First Course in Differential Equations with Modeling Applications. Eleventh edition. Cengage Learning, 2018.
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