Dyfyniad APA

Hammer, W. (1985). Occupational safety management and engineering (3ª ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Hammer, Willie. Occupational Safety Management and Engineering. 3ª ed. Prentice Hall, 1985.

Dyfyniad MLA

Hammer, Willie. Occupational Safety Management and Engineering. 3ª ed. Prentice Hall, 1985.

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