Dyfyniad APA

Ries, A. (1999). The 22 immutable laws of branding. Harper Collins.

Dyfyniad Arddull Chicago

Ries, Al. The 22 Immutable Laws of Branding. London: Harper Collins, 1999.

Dyfyniad MLA

Ries, Al. The 22 Immutable Laws of Branding. Harper Collins, 1999.

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