Dyfyniad APA

Waddams, A. L. (1980). Chemicals from petroleum: An introductory survey (4th ed.). Gulf Pub. Co., Book Division.

Dyfyniad Arddull Chicago

Waddams, Austen Lawrence. Chemicals from Petroleum: An Introductory Survey. 4th ed. Houston: Gulf Pub. Co., Book Division, 1980.

Dyfyniad MLA

Waddams, Austen Lawrence. Chemicals from Petroleum: An Introductory Survey. 4th ed. Gulf Pub. Co., Book Division, 1980.

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