Dyfyniad APA

NIEBEL, B. W. Methods, standars and work design#Benjamin W. Niebel, Andris Freivalds. McGraw-Hill.

Dyfyniad Arddull Chicago

NIEBEL, Benjamin W. Methods, Standars and Work Design#Benjamin W. Niebel, Andris Freivalds. McGraw-Hill.

Dyfyniad MLA

NIEBEL, Benjamin W. Methods, Standars and Work Design#Benjamin W. Niebel, Andris Freivalds. McGraw-Hill.

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