Παραπομπή APA

Tolle, H. (1975). Optimization methods. Springer - Verlag.

Παραπομπή Chicago Style

Tolle, Henning. Optimization Methods. New York: Springer - Verlag, 1975.

Παραπομπή MLA

Tolle, Henning. Optimization Methods. Springer - Verlag, 1975.