APA Edition Citation

Gelfand, I., & Fomin, S. (1963). Calculus of variations. Prentice - Hall.

Chicago Edition Citation

Gelfand, I.M, and S.V Fomin. Calculus of Variations. Prentice - Hall, 1963.

MLA Edition Citation

Gelfand, I.M, and S.V Fomin. Calculus of Variations. Prentice - Hall, 1963.

Warning: These citations may not always be 100% accurate.