Dyfyniad APA

Safety and Health at Work. Occupational Safety and Health Research Institute (OSHRI).

Dyfyniad Arddull Chicago

Safety and Health at Work. Seoul: Occupational Safety and Health Research Institute (OSHRI).

Dyfyniad MLA

Safety and Health at Work. Occupational Safety and Health Research Institute (OSHRI).

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