Katz, E., & Lazarsfeld, P. F. (1955). Personal influence: The part played by people in the flow of mass communications. The Free Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Katz, Elihu, و Paul F. Lazarsfeld. Personal Influence: The Part Played by People in the Flow of Mass Communications. New York: The Free Press, 1955.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Katz, Elihu, و Paul F. Lazarsfeld. Personal Influence: The Part Played by People in the Flow of Mass Communications. The Free Press, 1955.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.