एपीए उद्धरण

O'Connor, J. (1977). Better English Pronounciation. Cambridge University Press.

शिकागो स्टाइल उद्धरण

O'Connor, J.D. Better English Pronounciation. London: Cambridge University Press, 1977.

एमएलए उद्धरण

O'Connor, J.D. Better English Pronounciation. Cambridge University Press, 1977.