1. McCroskey, James C., Jensen, Tim and Valencia, Cynthia. 1973. “Measurement of the Credibility of Spouses and Peers,”. paper presented at the International Communication Association convention. 1973, Montreal.
2. An instrument for measuring the source credibility of basic speech communication instructors
3. Trait inferences: Evaluative and descriptive aspects.
4. Scale values for highest and lowest levels of credibility