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%.