Hartley, R. F. (1990). Marketing successes,historical to presentday: What we can learn (2.ed.). New York: John Wiley.
استشهاد بنمط شيكاغوHartley, Robert F. Marketing Successes,historical to Presentday: What We Can Learn. 2.ed. New York: John Wiley, 1990.
MLA استشهادHartley, Robert F. Marketing Successes,historical to Presentday: What We Can Learn. 2.ed. New York: John Wiley, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.