Barrett, H. (1981). Speaking practically. Holt Rinehart & Winstor.
Chicago Style (17. basım) AtıfBarrett, Harold. Speaking Practically. New York: Holt Rinehart & Winstor, 1981.
MLA (9th ed.) AtıfBarrett, Harold. Speaking Practically. Holt Rinehart & Winstor, 1981.
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