Cita APA

Wilson, W., & Barnard, R. (1995). Fifty-fifty: An intermediate course in communicative English. Englewood Cliffs, N.J.: Prentice Hall Regents.

Citación estilo Chicago

Wilson, Warren, y Róger Barnard. Fifty-fifty: An Intermediate Course in Communicative English. Englewood Cliffs, N.J.: Prentice Hall Regents, 1995.

Cita MLA

Wilson, Warren, y Róger Barnard. Fifty-fifty: An Intermediate Course in Communicative English. Englewood Cliffs, N.J.: Prentice Hall Regents, 1995.