APA
Gschwandtner G., . (2006). Sales Scripts That Close Every Deal: 420 Tested Responses to 30 of the Most Difficult Customer Objections. : McGraw-Hill.
Chicago
Gschwandtner Gerhard, . 2006. Sales Scripts That Close Every Deal: 420 Tested Responses to 30 of the Most Difficult Customer Objections. : McGraw-Hill.
Harvard
Gschwandtner G., . (2006). Sales Scripts That Close Every Deal: 420 Tested Responses to 30 of the Most Difficult Customer Objections. : McGraw-Hill.
MLA
Gschwandtner Gerhard, . Sales Scripts That Close Every Deal: 420 Tested Responses to 30 of the Most Difficult Customer Objections. : McGraw-Hill. 2006.