Dyfyniad APA

Harrison, P. (1983). Operational research. Mitchell Beazley.

Dyfyniad Arddull Chicago

Harrison, P. Operational Research. London: Mitchell Beazley, 1983.

Dyfyniad MLA

Harrison, P. Operational Research. Mitchell Beazley, 1983.

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