APA (7th ed.) Citation
Zill, D. G., & Cullen, M. R. (1997). Differential equations with boundary-value problems (4th ed.). Brooks/Cole Pub. Co..
Chicago Style (17th ed.) Citation
Zill, Dennis G., and Michael R. Cullen. Differential Equations with Boundary-value Problems. 4th ed. Pacific Grove: Brooks/Cole Pub. Co., 1997.
MLA (9th ed.) Citation
Zill, Dennis G., and Michael R. Cullen. Differential Equations with Boundary-value Problems. 4th ed. Brooks/Cole Pub. Co., 1997.
Warning: These citations may not always be 100% accurate.