Blackman, J. (2004). Stop whining! Start selling!: Profit-producing strategies for explosive sales results. Hoboken, N.J: Wiley.
शिकागो स्टाइल उद्धरणBlackman, Jeff. Stop Whining! Start Selling!: Profit-producing Strategies for Explosive Sales Results. Hoboken, N.J: Wiley, 2004.
एमएलए उद्धरणBlackman, Jeff. Stop Whining! Start Selling!: Profit-producing Strategies for Explosive Sales Results. Hoboken, N.J: Wiley, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.