APA-čujuhus (7. p.)
Williams, T. (2010). Positioning for professionals: How professional knowledge firms can differentiate their way to success. Wiley.
Chicago-čujuhus (17. p.)
Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Hoboken, N.J.: Wiley, 2010.
MLA-čujuhus (9. p.)
Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Wiley, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.