Langan, J. (2005). College writing skills and college writing with readings (6th ed.). New York: McGraw-Hill.
استشهاد بنمط شيكاغوLangan, John. College Writing Skills and College Writing With Readings. 6th ed. New York: McGraw-Hill, 2005.
MLA استشهادLangan, John. College Writing Skills and College Writing With Readings. 6th ed. New York: McGraw-Hill, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.