DEVELOPING COMMUNICATIVE COMPETENCE IN A SECOND LANGUAGE
ROBIN C.SCARCELLA1990 年出版188 页ISBN：
BUSINESS COMMUNICATIONS:PRINCIPLES AND METHODS SIXTH EDITION
WILLIAM C.HIMSTREET1981 年出版0 页ISBN：
RESEARCH A PRACTICAL GUIDE TO FINDING INFORMATION
MARTHA C ARMSTRONG2222 年出版175 页ISBN：
