Tohutoro APA (7th ed.)
Nick, M. J., & Koenig, K. M. (2004). ROI selling: Increasing revenue, profit & customer loyalty through the 360 degree sales cycle. Dearborn Trade Pub..
Tohutoru Kātū Chicago (17th ed.)
Nick, Michael J., me Kurt M. Koenig. ROI Selling: Increasing Revenue, Profit & Customer Loyalty Through the 360 Degree Sales Cycle. Chicago: Dearborn Trade Pub., 2004.
Tohutoro MLA (9th ed.)
Nick, Michael J., me Kurt M. Koenig. ROI Selling: Increasing Revenue, Profit & Customer Loyalty Through the 360 Degree Sales Cycle. Dearborn Trade Pub., 2004.
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