APA (7th ed.) Citation

Pontri︠a︡gin, L. S. (1962). Ordinary differential equations. Addison-Wesley Pub. Co..

Chicago Style (17th ed.) Citation

Pontri︠a︡gin, L. S. Ordinary Differential Equations. Reading, Mass.: Addison-Wesley Pub. Co., 1962.

MLA (9th ed.) Citation

Pontri︠a︡gin, L. S. Ordinary Differential Equations. Addison-Wesley Pub. Co., 1962.