Dyfyniad APA
American Society for Testing and Materials. Committee C-1 on Cement, ASTM Symposium on Blended Cements, & Frohnsdorff, G. (1986). Blended cements: A symposium. ASTM.
Dyfyniad Arddull Chicago
American Society for Testing and Materials. Committee C-1 on Cement, ASTM Symposium on Blended Cements, and Geoffrey Frohnsdorff. Blended Cements: A Symposium. Philadelphia, PA: ASTM, 1986.
Dyfyniad MLA
American Society for Testing and Materials. Committee C-1 on Cement, et al. Blended Cements: A Symposium. ASTM, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.