ebrary, Inc. (2001). Guidelines on occupational safety and health management systems. ILO.
Chicago-referens (17:e uppl.)ebrary, Inc. Guidelines on Occupational Safety and Health Management Systems. Geneva: ILO, 2001.
MLA-referens (9:e uppl.)ebrary, Inc. Guidelines on Occupational Safety and Health Management Systems. ILO, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.