Dyfyniad APA

COWELL DONALD W. (1984). MARKETING OF SERVICES. INSTITUTE OF MARKETING.

Dyfyniad Arddull Chicago

COWELL DONALD W. MARKETING OF SERVICES. LONDON: INSTITUTE OF MARKETING, 1984.

Dyfyniad MLA

COWELL DONALD W. MARKETING OF SERVICES. INSTITUTE OF MARKETING, 1984.

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