(2002). Cambridge BEC preliminary: Practice test from the university of Cambridge local examinations syndicate. Cambridge: Cambridge University Press.
Παραπομπή Chicago StyleCambridge BEC Preliminary: Practice Test From the University of Cambridge Local Examinations Syndicate. Cambridge: Cambridge University Press, 2002.
Παραπομπή MLACambridge BEC Preliminary: Practice Test From the University of Cambridge Local Examinations Syndicate. Cambridge: Cambridge University Press, 2002.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.