Logan, J. D. (2006). A first course in differential equations. New York: Springer.
शिकागो स्टाइल उद्धरणLogan, J. David. A First Course in Differential Equations. New York: Springer, 2006.
एमएलए उद्धरणLogan, J. David. A First Course in Differential Equations. New York: Springer, 2006.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.