Cita APA (7th ed.)

Ekeland, I. (1999). Convex analysis and variational problems. Society for Industrial and Applied Mathematics.

Cita Chicago (17th ed.)

Ekeland, Ivar. Convex Analysis and Variational Problems. Philadelphia: Society for Industrial and Applied Mathematics, 1999.

Cita MLA (9th ed.)

Ekeland, Ivar. Convex Analysis and Variational Problems. Society for Industrial and Applied Mathematics, 1999.