MarketingSherpa, Inc, & ebrary, Inc. (2003). Proven online ad sales tactics: Practical know-how from profitable web and newsletter publishers. MarketingSherpa, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarketingSherpa, Inc, और Inc ebrary. Proven Online Ad Sales Tactics: Practical Know-how from Profitable Web and Newsletter Publishers. Portsmouth, R.I.: MarketingSherpa, Inc., 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMarketingSherpa, Inc, और Inc ebrary. Proven Online Ad Sales Tactics: Practical Know-how from Profitable Web and Newsletter Publishers. MarketingSherpa, Inc., 2003.
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