APA (7th ed.) Citation

Zill, D. G. (1992). A first course in differential equations (5th ed.). PWS-Kent.

Chicago Style (17th ed.) Citation

Zill, Dennis G. A First Course in Differential Equations. 5th ed. Boston: PWS-Kent, 1992.

MLA (9th ed.) Citation

Zill, Dennis G. A First Course in Differential Equations. 5th ed. PWS-Kent, 1992.