APA (7th ed.) Citation

Zill, D. G. (1989). A first course in differential equations with applications (4th ed.). PWS-Kent.

Chicago Style (17th ed.) Citation

Zill, Dennis G. A First Course in Differential Equations with Applications. 4th ed. Boston: PWS-Kent, 1989.

MLA (9th ed.) Citation

Zill, Dennis G. A First Course in Differential Equations with Applications. 4th ed. PWS-Kent, 1989.

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