Dyfyniad APA

American Society for Testing and Materials & ASTM International. (2009). Standard specification for Zinc. American Society of Testing Materials.

Dyfyniad Arddull Chicago

American Society for Testing and Materials and ASTM International. Standard Specification for Zinc. [Western Conshohocken, Pennsylvania]: American Society of Testing Materials, 2009.

Dyfyniad MLA

American Society for Testing and Materials and ASTM International. Standard Specification for Zinc. American Society of Testing Materials, 2009.

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