Παραπομπή σε μορφή APA (7η εκδ.)

Rockafellar, R. T. (1981). The theory of subgradients and its applications to problems of optimization: Convex and nonconvex functions. Heldermann.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Rockafellar, R. Tyrrell. The Theory of Subgradients and Its Applications to Problems of Optimization: Convex and Nonconvex Functions. Berlin: Heldermann, 1981.

Παραπομπή σε μορφή MLA (9th εκδ.)

Rockafellar, R. Tyrrell. The Theory of Subgradients and Its Applications to Problems of Optimization: Convex and Nonconvex Functions. Heldermann, 1981.