APA (7th ed.) Citation

Foll, D., Foll, D., Kelly, A., & Kelly, A. (1994). First certificate avenues. Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Foll, David, David Foll, Anne Kelly, and Anne Kelly. First Certificate Avenues. New York [u.a.]: Cambridge Univ. Press, 1994.

MLA (9th ed.) Citation

Foll, David, et al. First Certificate Avenues. Cambridge Univ. Press, 1994.