Forsyth, P. (2009). 100 great sales ideas: From leading companies around the world. Marshall Cavendish Business.
Chicago-Zitierstil (17. Ausg.)Forsyth, Patrick. 100 Great Sales Ideas: From Leading Companies Around the World. London: Marshall Cavendish Business, 2009.
MLA-Zitierstil (9. Ausg.)Forsyth, Patrick. 100 Great Sales Ideas: From Leading Companies Around the World. Marshall Cavendish Business, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.