Citazione Stile APA (7a Edizione)

Langan John. (2005). College Writing Skills With Readings (6th ed.). Mc Graw Hill.

Citazione stile Chigago Style (17a edizione)

Langan John. College Writing Skills With Readings. 6th ed. New York: Mc Graw Hill, 2005.

Citatione MLA (9a ed.)

Langan John. College Writing Skills With Readings. 6th ed. Mc Graw Hill, 2005.