UNWIN W R. (1983). MASTERING BUSINESS COMMUNICATION. MACMILLAN.
芝加哥风格引文UNWIN W R. MASTERING BUSINESS COMMUNICATION. LONDON: MACMILLAN, 1983.
MLA引文UNWIN W R. MASTERING BUSINESS COMMUNICATION. MACMILLAN, 1983.
警告：这些引文格式不一定是100％准确.
APA引文