Dyfyniad APA

Dartnell Corporation. (1927). The Dartnell advertiser's guide and advertising year book. Dartnell Corp..

Dyfyniad Arddull Chicago

Dartnell Corporation. The Dartnell Advertiser's Guide and Advertising Year Book. New York: Dartnell Corp., 1927.

Dyfyniad MLA

Dartnell Corporation. The Dartnell Advertiser's Guide and Advertising Year Book. Dartnell Corp., 1927.

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