McCroskeyJ. D.HoldridgeW.ToombJ. D.An instrument for measuring the source credibility of basic speech communication instructors. The Speech Teacher, 1974, 23, 26–33.
4.
McCroskeyJ. D.JensenT.ToddC.Generalizability of source credibility scales for public figures. Paper presented at the Speech Communication Association Convention, Chicago, December, 1972.