Παραπομπή APA

Hammer, P. L., & Zontendijk, G. (1974). Mathematical programming in theory and practice. North Holland.

Παραπομπή Chicago Style

Hammer, P L., και G. Zontendijk. Mathematical Programming in Theory and Practice. Amsterdam: North Holland, 1974.

Παραπομπή MLA

Hammer, P L., και G. Zontendijk. Mathematical Programming in Theory and Practice. North Holland, 1974.