APA (7th ed.) Citation

Zill, D. G. (2018). Differential equations with boundary-value problems (Ninth edition.). Cengage Learning.

Chicago Style (17th ed.) Citation

Zill, Dennis G. Differential Equations with Boundary-value Problems. Ninth edition. Boston, MA: Cengage Learning, 2018.

MLA (8th ed.) Citation

Zill, Dennis G. Differential Equations with Boundary-value Problems. Ninth edition. Cengage Learning, 2018.

Warning: These citations may not always be 100% accurate.