APA-referens (7:e uppl.)

Williams, T. (2010). Positioning for professionals: How professional knowledge firms can differentiate their way to success. Wiley.

Chicago-referens (17:e uppl.)

Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Hoboken, N.J.: Wiley, 2010.

MLA-referens (9:e uppl.)

Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Wiley, 2010.