APA
Hopkins T., . (1998). Sales closing for dummies. Hoboken, NJ: Wiley Publishing, Inc.
Chicago
Hopkins Tom, . 1998. Sales closing for dummies. Hoboken, NJ: Wiley Publishing, Inc.
Harvard
Hopkins T., . (1998). Sales closing for dummies. Hoboken, NJ: Wiley Publishing, Inc.
MLA
Hopkins Tom, . Sales closing for dummies. Hoboken, NJ: Wiley Publishing, Inc. 1998.