Willis, H. (1966). Structure, style, and usage: A guide to expository writing. Holt, Rinehart and Winston.
Chicago Style (17. basım) AtıfWillis, Hulon. Structure, Style, and Usage: A Guide to Expository Writing. New York: Holt, Rinehart and Winston, 1966.
MLA (9th ed.) AtıfWillis, Hulon. Structure, Style, and Usage: A Guide to Expository Writing. Holt, Rinehart and Winston, 1966.
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