Leo Jones. (2001). New progress to proficiency (student's book). Cambridge: Cambridge Univ. Press.
Chicago Style CitationLeo Jones. New Progress to Proficiency (student's Book). Cambridge: Cambridge Univ. Press, 2001.
Cita MLALeo Jones. New Progress to Proficiency (student's Book). Cambridge: Cambridge Univ. Press, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.