Dyfyniad APA

HAEHLING CHRISTOPH. (1975). CASES IN OPERATIONAL RESEARCH. HOLDEN DAY.

Dyfyniad Arddull Chicago

HAEHLING CHRISTOPH. CASES IN OPERATIONAL RESEARCH. LONDON: HOLDEN DAY, 1975.

Dyfyniad MLA

HAEHLING CHRISTOPH. CASES IN OPERATIONAL RESEARCH. HOLDEN DAY, 1975.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.