APA citiranje

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

Trích dẫn kiểu Chicago

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

MLA citiranje

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