Langan, J. (2005). English skills and English skills with readings (6th ed.). New York: McGraw-Hill.
Čikaški stil citiranjaLangan, John. English Skills and English Skills With Readings. 6th ed. New York: McGraw-Hill, 2005.
MLA način citiranjaLangan, John. English Skills and English Skills With Readings. 6th ed. New York: McGraw-Hill, 2005.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.