Dyfyniad APA

Hazleton, J. E. (1970). The economics of the sulphur industry. London: Resources For The Future, Inc.

Dyfyniad Arddull Chicago

Hazleton, Jared E. The Economics of the Sulphur Industry. London: Resources For The Future, Inc, 1970.

Dyfyniad MLA

Hazleton, Jared E. The Economics of the Sulphur Industry. London: Resources For The Future, Inc, 1970.

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