Citazione Stile APA (7a Edizione)

Langan, J. (2005). College writing skills, with readings (6th ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Langan, John. College Writing Skills, with Readings. 6th ed. Boston: McGraw-Hill, 2005.

Citatione MLA (8a ed.)

Langan, John. College Writing Skills, with Readings. 6th ed. McGraw-Hill, 2005.