Zill. (2009). A first course in differential equations with modeling applications (9th ed.). Belmont, CA: Brooks/Cole, Cengage Learning.
Chicago Style CitationZill. A First Course in Differential Equations With Modeling Applications. 9th ed. Belmont, CA: Brooks/Cole, Cengage Learning, 2009.
MLA CitationZill. A First Course in Differential Equations With Modeling Applications. 9th ed. Belmont, CA: Brooks/Cole, Cengage Learning, 2009.
Warning: These citations may not always be 100% accurate.