O'Connor, J. (1977). Better English Pronounciation. Cambridge University Press.
Chicago Edition CitationO'Connor, J.D. Better English Pronounciation. London: Cambridge University Press, 1977.
Cita MLAO'Connor, J.D. Better English Pronounciation. Cambridge University Press, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.