Cita APA (7th ed.)
Langan, J. (1995). English skills with readings: John Langan (3rd ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Langan, John. English Skills with Readings: John Langan. 3rd ed. New York: McGraw-Hill, 1995.
Cita MLA (9th ed.)
Langan, John. English Skills with Readings: John Langan. 3rd ed. McGraw-Hill, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.