एपीए उद्धरण

Pontryagin, L. S. (1962). Ordinary differential equations. Addison - Wesley.

शिकागो स्टाइल उद्धरण

Pontryagin, L S. Ordinary Differential Equations. London: Addison - Wesley, 1962.

एमएलए उद्धरण

Pontryagin, L S. Ordinary Differential Equations. Addison - Wesley, 1962.