Dyfyniad APA
International Labour Office, ebrary, Inc, & Kanawaty, G. (1992). Introduction to work study (4th (rev.) ed.). International Labour Office.
Dyfyniad Arddull Chicago
International Labour Office, Inc ebrary, and George Kanawaty. Introduction to Work Study. 4th (rev.) ed. Geneva: International Labour Office, 1992.
Dyfyniad MLA
International Labour Office, et al. Introduction to Work Study. 4th (rev.) ed. International Labour Office, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.