APA استشهاد

Arnold, V. I., & Levi, M. (1988). Geometrical methods in the theory of ordinary differential equations (2nd ed.). Springer-Verlag.

استشهاد بنمط شيكاغو

Arnold, V. I., و Mark Levi. Geometrical Methods in the Theory of Ordinary Differential Equations. 2nd ed. New York: Springer-Verlag, 1988.

MLA استشهاد

Arnold, V. I., و Mark Levi. Geometrical Methods in the Theory of Ordinary Differential Equations. 2nd ed. Springer-Verlag, 1988.