Schiffman's, S. (2009). Sales essentials. Adam Media.
Chicago Style (17th ed.) CitationSchiffman's, Stephan. Sales Essentials. Avon, Massachusetts: Adam Media, 2009.
MLA (9th ed.) CitationSchiffman's, Stephan. Sales Essentials. Adam Media, 2009.
Warning: These citations may not always be 100% accurate.