Langan, J. (2005). College writing skills (6th ed.). New York: McGraw-Hill.
Trích dẫn kiểu ChicagoLangan, John. College Writing Skills. 6th ed. New York: McGraw-Hill, 2005.
MLA citiranjeLangan, John. College Writing Skills. 6th ed. New York: McGraw-Hill, 2005.
Opozorilo: Ti citati niso vedno 100% točni.