Zill, D. G., & Dennis G. Zill; Warren S. Wright; Michael R. Cullen. (2005). Differential equations with boundary value problems. Boston, MA: Cengage Learning.
शिकागो स्टाइल उद्धरणZill, Dennis G., और Dennis G. Zill; Warren S. Wright; Michael R. Cullen. Differential Equations With Boundary Value Problems. Boston, MA: Cengage Learning, 2005.
एमएलए उद्धरणZill, Dennis G., और Dennis G. Zill; Warren S. Wright; Michael R. Cullen. Differential Equations With Boundary Value Problems. Boston, MA: Cengage Learning, 2005.
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