Παραπομπή APA

International Federation of Operation Research Societies., International Conference on Operational Research, & Haley, K. (1979). Operational research. Amsterdam: North-Holland.

Παραπομπή Chicago Style

International Federation of Operation Research Societies., International Conference on Operational Research, and K.B Haley. Operational Research. Amsterdam: North-Holland, 1979.

Παραπομπή MLA

International Federation of Operation Research Societies., International Conference on Operational Research, and K.B Haley. Operational Research. Amsterdam: North-Holland, 1979.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.