APA
Holmes C., . (2007). Ultimate sales machine : turbocharge your business with relentless focus on 12 key strategies. New York: Portfolio.
Chicago
Holmes Chet, . 2007. Ultimate sales machine : turbocharge your business with relentless focus on 12 key strategies. New York: Portfolio.
Harvard
Holmes C., . (2007). Ultimate sales machine : turbocharge your business with relentless focus on 12 key strategies. New York: Portfolio.
MLA
Holmes Chet, . Ultimate sales machine : turbocharge your business with relentless focus on 12 key strategies. New York: Portfolio. 2007.