Poole, E. G. C. (1960). Introduction to the theory of linear differential equations. New York.
शिकागो स्टाइल उद्धरणPoole, E G C. Introduction to the Theory of Linear Differential Equations. New York, 1960.
एमएलए उद्धरणPoole, E G C. Introduction to the Theory of Linear Differential Equations. New York, 1960.
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