APA (7th ed.) Citation

Katz, E., & Lazarsfeld, P. F. j. a. (1955). Personal influence: The part played by people in the flow of mass communication. Free Press.

Chicago Style (17th ed.) Citation

Katz, Elihu, and Paul Felix joint auth Lazarsfeld. Personal Influence: The Part Played by People in the Flow of Mass Communication. New York: Free Press, 1955.

MLA (9th ed.) Citation

Katz, Elihu, and Paul Felix joint auth Lazarsfeld. Personal Influence: The Part Played by People in the Flow of Mass Communication. Free Press, 1955.