Schiggman, S. (2010). Selling When No One is Buying (5th.). Kogan Page.
芝加哥风格引文Schiggman, Stephan. Selling When No One Is Buying. 5th. India: Kogan Page, 2010.
MLA引文Schiggman, Stephan. Selling When No One Is Buying. 5th. Kogan Page, 2010.
警告:这些引文格式不一定是100%准确.