APA (7th ed.) Citation

Leitmann, G. (1981). The calculus of variations and optimal control: An introduction. Plenum.

Chicago Style (17th ed.) Citation

Leitmann, George. The Calculus of Variations and Optimal Control: An Introduction. Nueva York: Plenum, 1981.

MLA (9th ed.) Citation

Leitmann, George. The Calculus of Variations and Optimal Control: An Introduction. Plenum, 1981.