Arnold, V. I., & Levi, M. (1988). Geometrical methods in the theory of ordinary differential equations (2nd ed.). Springer-Verlag.
शिकागो स्टाइल उद्धरणArnold, V. I., और Mark Levi. Geometrical Methods in the Theory of Ordinary Differential Equations. 2nd ed. New York: Springer-Verlag, 1988.
एमएलए उद्धरणArnold, V. I., और Mark Levi. Geometrical Methods in the Theory of Ordinary Differential Equations. 2nd ed. Springer-Verlag, 1988.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.