Kleinfield, S. (1981). The Biggest Company on Earth: A Profile of AT&T. New York: Holt, Rinehart and Winston.
استشهاد بنمط شيكاغوKleinfield, Sonny. The Biggest Company On Earth: A Profile of AT&T. New York: Holt, Rinehart and Winston, 1981.
MLA استشهادKleinfield, Sonny. The Biggest Company On Earth: A Profile of AT&T. New York: Holt, Rinehart and Winston, 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.