Schiggman, S. (2010). Selling When No One is Buying (5th.). Kogan Page.
Chicago-čujuhus (17. p.)Schiggman, Stephan. Selling When No One Is Buying. 5th. India: Kogan Page, 2010.
MLA-čujuhus (9. p.)Schiggman, Stephan. Selling When No One Is Buying. 5th. Kogan Page, 2010.
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