APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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