Barrett, H. (1973). Practical methods in speech (3rd ed.). Rinehart.
Chicago Style (17. basım) AtıfBarrett, Harold. Practical Methods in Speech. 3rd ed. San Francisco: Rinehart, 1973.
MLA (9th ed.) AtıfBarrett, Harold. Practical Methods in Speech. 3rd ed. Rinehart, 1973.
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