Jonker, N. (1998). Further ahead: A communication skills course for business English : teacher's guide. Cambridge: Cambridge University Press.
シカゴスタイル引用形Jonker, Niels. Further Ahead: A Communication Skills Course for Business English : Teacher's Guide. Cambridge: Cambridge University Press, 1998.
MLA引用形式Jonker, Niels. Further Ahead: A Communication Skills Course for Business English : Teacher's Guide. Cambridge: Cambridge University Press, 1998.
警告: この引用は必ずしも正確ではありません.