Williams, T. (2010). Positioning for professionals: How professional knowledge firms can differentiate their way to success. Wiley.
芝加哥风格引文Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Hoboken, N.J.: Wiley, 2010.
MLA引文Williams, Tim. Positioning for Professionals: How Professional Knowledge Firms Can Differentiate Their Way to Success. Wiley, 2010.
警告：这些引文格式不一定是100％准确.