Barker, L L.(1968). Two investigations of the relationship among selected ratings of speech effectiveness and comprehension. Speech Monographs, 35(3), 400-406. doi:10.1080/03637756809375589
MLA CitationBarker, Larry L. "Two Investigations of the Relationship Among Selected Ratings of Speech Effectiveness and Comprehension". Speech Monographs, 35.3 ( 1968 ): 400-406.
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