Dyfyniad APA

(1972). A look at business in 1990. Washington: U. S Government Printing Office.

Dyfyniad Arddull Chicago

A Look At Business in 1990. Washington: U. S Government Printing Office, 1972.

Dyfyniad MLA

A Look At Business in 1990. Washington: U. S Government Printing Office, 1972.

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