Cofnodi Dyfyniadau
Dyfyniad APA
Burdick, D. L., & Leffler, W. L. (2010). Petrochemicals in nontechnical language (4th ed.). PennWell Corp..
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Dyfyniad Arddull Chicago
Burdick, Donald L., and William L. Leffler. Petrochemicals in Nontechnical Language. 4th ed. Tulsa, OK: PennWell Corp., 2010.
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Dyfyniad MLA
Burdick, Donald L., and William L. Leffler. Petrochemicals in Nontechnical Language. 4th ed. PennWell Corp., 2010.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.