Cita APA

Williams, I., & Solís, J. A. (2002). Green light: Student book. New York: McGraw-Hill.

Chicago Style Citation

Williams, Ivor, i Jaime Antonio Solís. Green Light: Student Book. New York: McGraw-Hill, 2002.

Cita MLA

Williams, Ivor, i Jaime Antonio Solís. Green Light: Student Book. New York: McGraw-Hill, 2002.