APA način citiranja

Friedman, M. D. (1968). Variational methods in optimum control theory. Academic Press.

Čikaški stil citiranja

Friedman, M D. Variational Methods in Optimum Control Theory. New York: Academic Press, 1968.

MLA način citiranja

Friedman, M D. Variational Methods in Optimum Control Theory. Academic Press, 1968.