Hoadley, W. E. (1980). Economy and the presidents: 1980 and beyond. Prentice Hall Ine England Cliffs..
استشهاد بنمط شيكاغوHoadley, Walter Evans. Economy and the Presidents: 1980 and Beyond. New Jersey: Prentice Hall Ine England Cliffs., 1980.
MLA استشهادHoadley, Walter Evans. Economy and the Presidents: 1980 and Beyond. Prentice Hall Ine England Cliffs., 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.