David Foll. (1996). Fisrt certificate avenues class casstte 1. Cambridge, UK: Cambridge Univ. Press.
Trích dẫn kiểu ChicagoDavid Foll. Fisrt Certificate Avenues Class Casstte 1. Cambridge, UK: Cambridge Univ. Press, 1996.
MLA引文David Foll. Fisrt Certificate Avenues Class Casstte 1. Cambridge, UK: Cambridge Univ. Press, 1996.
警告:这些引文格式不一定是100%准确.