APA
Allora R., . (2009). Winning Sales Letters From Prospect To Close. : Mhe.
Chicago
Allora Ralph, . 2009. Winning Sales Letters From Prospect To Close. : Mhe.
Harvard
Allora R., . (2009). Winning Sales Letters From Prospect To Close. : Mhe.
MLA
Allora Ralph, . Winning Sales Letters From Prospect To Close. : Mhe. 2009.