Dyfyniad APA

Goetsch, D. L. (2011). Occupational safety and health: For technologists, Engineers and managers (7th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Goetsch, David L. Occupational Safety and Health: For Technologists, Engineers and Managers. 7th ed. Boston: Prentice Hall, 2011.

Dyfyniad MLA

Goetsch, David L. Occupational Safety and Health: For Technologists, Engineers and Managers. 7th ed. Prentice Hall, 2011.

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