Dyfyniad APA

Casler, K. (1989). Business assignments: Telephone conservation. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Casler, Ken. Business Assignments: Telephone Conservation. Oxford: Oxford University Press, 1989.

Dyfyniad MLA

Casler, Ken. Business Assignments: Telephone Conservation. Oxford: Oxford University Press, 1989.

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