Zill, & Cullen. (2009). Differential equations with boundary-value problems (7th ed.). Belmont, CA: Brooks/Cole, Cengage Learning.
Chicago Style CitationZill, and Cullen. Differential Equations With Boundary-value Problems. 7th ed. Belmont, CA: Brooks/Cole, Cengage Learning, 2009.
MLA CitationZill, and Cullen. Differential Equations With Boundary-value Problems. 7th ed. Belmont, CA: Brooks/Cole, Cengage Learning, 2009.
Warning: These citations may not always be 100% accurate.