Sheth Jagdish. (2002). Rule of Three: Surviving and Thriving in Competitive Markets. Free Press.
Chicago-referens (17:e uppl.)Sheth Jagdish. Rule of Three: Surviving and Thriving in Competitive Markets. New York: Free Press, 2002.
MLA-referens (9:e uppl.)Sheth Jagdish. Rule of Three: Surviving and Thriving in Competitive Markets. Free Press, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.