Katz, E., & Lazarsfeld, P. F. (2006). Personal influence: The part played by people in the flow of mass communications. Transaction Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Katz, Elihu, και Paul Felix Lazarsfeld. Personal Influence: The Part Played by People in the Flow of Mass Communications. New Brunswick, N.J: Transaction Publishers, 2006.
Παραπομπή σε μορφή MLA (9th εκδ.)Katz, Elihu, και Paul Felix Lazarsfeld. Personal Influence: The Part Played by People in the Flow of Mass Communications. Transaction Publishers, 2006.
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