Langan, J. (2014). College writing skills with readings (9th ed.). McGraw-Hill.
Čikaški stil citiranja (17. izdanje)Langan, John. College Writing Skills with Readings. 9th ed. New York: McGraw-Hill, 2014.
MLA način citiranja (9. izdanje)Langan, John. College Writing Skills with Readings. 9th ed. McGraw-Hill, 2014.
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