APA (7 वां संस्करण) प्रशस्ति पत्र
Burkan , W. C. (1996). Wide angel vision: Beat your competition by focusing on fringe competitors, lost customers, and rogue employees. John Wiley & Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Burkan , Wayne C. Wide Angel Vision: Beat Your Competition by Focusing on Fringe Competitors, Lost Customers, and Rogue Employees. New York: John Wiley & Sons, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Burkan , Wayne C. Wide Angel Vision: Beat Your Competition by Focusing on Fringe Competitors, Lost Customers, and Rogue Employees. John Wiley & Sons, 1996.
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