APA (7th ed.) Citation

Zill, D. G. (2018). Differential equations with boundary-value problems (9e.). Cengage.

Chicago Style (17th ed.) Citation

Zill, Dennis G. Differential Equations with Boundary-value Problems. 9e. Boston, MA, USA: Cengage, 2018.

MLA (9th ed.) Citation

Zill, Dennis G. Differential Equations with Boundary-value Problems. 9e. Cengage, 2018.

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