एपीए उद्धरण

Jonker, N. (1998). Further ahead: A communication skills course for business English : teacher's guide. Cambridge: Cambridge University Press.

शिकागो स्टाइल उद्धरण

Jonker, Niels. Further Ahead: A Communication Skills Course for Business English : Teacher's Guide. Cambridge: Cambridge University Press, 1998.

एमएलए उद्धरण

Jonker, Niels. Further Ahead: A Communication Skills Course for Business English : Teacher's Guide. Cambridge: Cambridge University Press, 1998.