English Language Services. (1995). English 900; Book four: A basic course. New York: Collier-MacMillan International.
Stile di citazione ChicagoEnglish Language Services. English 900; Book Four: A Basic Course. New York: Collier-MacMillan International, 1995.
Citazione MLAEnglish Language Services. English 900; Book Four: A Basic Course. New York: Collier-MacMillan International, 1995.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.