APA-ийн эшлэл(7 дахь хэвлэлт)

Schiffman, S. (2008). The 25 sales habits of highly successful salespeople (3rd ed.). Adams Media.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Schiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Avon, Mass.: Adams Media, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Schiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Adams Media, 2008.