Beckwith, H. (1997). Selling the invisible: A field guide to modern marketing. New York: Warner.
Style de citation ChicagoBeckwith, Harry. Selling the Invisible: A Field Guide to Modern Marketing. New York: Warner, 1997.
Style de citation MLABeckwith, Harry. Selling the Invisible: A Field Guide to Modern Marketing. New York: Warner, 1997.
Attention : ces citations peuvent ne pas être correctes à 100%.