Dyfyniad APA

RIES AL. (1993). 22 IMMUTABLE LAWS OF MARKETING VIOLATE THEM AT YOUR OWN RISK. INDUS PUBLISHING COMPANY.

Dyfyniad Arddull Chicago

RIES AL. 22 IMMUTABLE LAWS OF MARKETING VIOLATE THEM AT YOUR OWN RISK. NEW DELHI: INDUS PUBLISHING COMPANY, 1993.

Dyfyniad MLA

RIES AL. 22 IMMUTABLE LAWS OF MARKETING VIOLATE THEM AT YOUR OWN RISK. INDUS PUBLISHING COMPANY, 1993.

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