Citazione Stile APA (7a Edizione)

Freeman, D., & Graves, K. L. (2005). Icon intro: International communication through english : [student book].

Citazione stile Chigago Style (17a edizione)

Freeman, Donald, e Kathleen Lee Graves. Icon Intro: International Communication Through English : [student Book]. New York, 2005.

Citatione MLA (9a ed.)

Freeman, Donald, e Kathleen Lee Graves. Icon Intro: International Communication Through English : [student Book]. 2005.