APA استشهاد

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

استشهاد بنمط شيكاغو

Arnold, V.I. Geometrical Methods in the Theory of Ordinary Differential Equations. Ed.2. Berlin: Springer- Verlag, 1988.

MLA استشهاد

Arnold, V.I. Geometrical Methods in the Theory of Ordinary Differential Equations. Ed.2. Springer- Verlag, 1988.