Frank, W. W., & Lapp, C. L. (1959). How to outsell the born salesman. The MacMillan Company.
استشهاد بنمط شيكاغوFrank, William W., و Charles L. Lapp. How to Outsell the Born Salesman. New York: The MacMillan Company, 1959.
MLA استشهادFrank, William W., و Charles L. Lapp. How to Outsell the Born Salesman. The MacMillan Company, 1959.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.