Cita APA (7a ed.)
Zill, D. G., & Cullen, M. R. (1997). Differential equations with boundary-value problems (4th ed.). Brooks/Cole Pub. Co..
Cita Chicago Style (17a ed.)
Zill, Dennis G., y Michael R. Cullen. Differential Equations with Boundary-value Problems. 4th ed. Pacific Grove: Brooks/Cole Pub. Co., 1997.
Cita MLA (9a ed.)
Zill, Dennis G., y Michael R. Cullen. Differential Equations with Boundary-value Problems. 4th ed. Brooks/Cole Pub. Co., 1997.
Precaución: Estas citas no son 100% exactas.