APA Citation

Beckwith, H. (1997). Selling the invisible: A field guide to modern marketing. New York: Warner.

Trích dẫn kiểu Chicago

Beckwith, Harry. Selling the Invisible: A Field Guide to Modern Marketing. New York: Warner, 1997.

MLA Citation

Beckwith, Harry. Selling the Invisible: A Field Guide to Modern Marketing. New York: Warner, 1997.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.