Eichenbaum, D. A. (2007). The business rules: The seven irrefutable laws that determine all business success. Canada: Entrepreneur Press.
استشهاد بنمط شيكاغوEichenbaum, David A. The Business Rules: The Seven Irrefutable Laws That Determine All Business Success. Canada: Entrepreneur Press, 2007.
MLA استشهادEichenbaum, David A. The Business Rules: The Seven Irrefutable Laws That Determine All Business Success. Canada: Entrepreneur Press, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.