Dyfyniad APA
American Society for Testing and Materials. Committee A-1 on Steel, Stainless Steel, and Related Alloys, Symposium on Steel Forgings, Nisbett, E. G., & Melilli, A. S. (1997). Steel forgings. ASTM.
Dyfyniad Arddull Chicago
American Society for Testing and Materials. Committee A-1 on Steel, Stainless Steel, and Related Alloys, Symposium on Steel Forgings, Edward G. Nisbett, and Albert S. Melilli. Steel Forgings. West Conshohocken, PA: ASTM, 1997.
Dyfyniad MLA
American Society for Testing and Materials. Committee A-1 on Steel, Stainless Steel, and Related Alloys, et al. Steel Forgings. ASTM, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.