Παραπομπή APA

Hammer, P. L., & Johnson, E. L. K. (1979). Discrete optimization [proceedings]. North Holland.

Παραπομπή Chicago Style

Hammer, P L., και E L Korts Johnson. Discrete Optimization [proceedings]. Amsterdam: North Holland, 1979.

Παραπομπή MLA

Hammer, P L., και E L Korts Johnson. Discrete Optimization [proceedings]. North Holland, 1979.