Langan, J. (2003). Sentence skills: A Workbook for Writers. New York: The McGraw-Hill Companies.
Čikaški stil citiranjaLangan, John. Sentence Skills: A Workbook for Writers. New York: The McGraw-Hill Companies, 2003.
MLA način citiranjaLangan, John. Sentence Skills: A Workbook for Writers. New York: The McGraw-Hill Companies, 2003.
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