Dyfyniad APA

International Symposium on Safety in Baseball/Softball Atlanta, Ga., American Society for Testing and Materials, Hoerner, E. F., & Cosgrove, F. A. (1997). International Symposium on Safety in Baseball/Softball. ASTM.

Dyfyniad Arddull Chicago

International Symposium on Safety in Baseball/Softball Atlanta, Ga., American Society for Testing and Materials, Earl F. Hoerner, and Francis A. Cosgrove. International Symposium on Safety in Baseball/Softball. West Conshohocken, PA: ASTM, 1997.

Dyfyniad MLA

International Symposium on Safety in Baseball/Softball Atlanta, Ga., et al. International Symposium on Safety in Baseball/Softball. ASTM, 1997.

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