Cita APA

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

Chicago Edition Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.