APA (7e ed.) Bronvermelding

BERRY LEONARD L. (1991). MARKETING SERVICES: COMPETING THROUGH QUALITY. FREE PRESS.

Chicago (17e ed.) Bronvermelding

BERRY LEONARD L. MARKETING SERVICES: COMPETING THROUGH QUALITY. NEW YORK: FREE PRESS, 1991.

MLA (9e ed.) Bronvermelding

BERRY LEONARD L. MARKETING SERVICES: COMPETING THROUGH QUALITY. FREE PRESS, 1991.

Let op: Deze citaties zijn niet altijd 100% accuraat.