APA (7th ed.) Citation

Gelʹfand, I. M., & Fomin, S. V. (1963). Calculus of variations (Rev. English ed., 7. print.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Gelʹfand, Izrailʹ M., and Sergej V. Fomin. Calculus of Variations. Rev. English ed., 7. print. Englewood Cliffs, NJ: Prentice-Hall, 1963.

MLA (9th ed.) Citation

Gelʹfand, Izrailʹ M., and Sergej V. Fomin. Calculus of Variations. Rev. English ed., 7. print. Prentice-Hall, 1963.