Iantorno, G., & Papa, M. (1994). Turning points 4, communicating in english: S. Addison- Wesley.
Chicago Style (17th ed.) CitationIantorno, Giuliano, and Mario Papa. Turning Points 4, Communicating in English: S. New York: Addison- Wesley, 1994.
MLA (9th ed.) CitationIantorno, Giuliano, and Mario Papa. Turning Points 4, Communicating in English: S. Addison- Wesley, 1994.