Dyfyniad APA

Waddams, A. L. (1962). Chemicals from petroleum: An introductory survey. London: John Murray.

Dyfyniad Arddull Chicago

Waddams, A. Lawrence. Chemicals From Petroleum: An Introductory Survey. London: John Murray, 1962.

Dyfyniad MLA

Waddams, A. Lawrence. Chemicals From Petroleum: An Introductory Survey. London: John Murray, 1962.

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