SIX-WAY PARAGRAPHS:REVISED AND EXPANDED
WALTER PAUK1983 年出版239 页ISBN：0890613036
FOUNDATIONS OF WRITING:DEVELOPING RESEARCH AND ACADEMIC WRITING SKILLS
CAROLYN M.SPENCER AND BEVERLY ARBON1996 年出版247 页ISBN：
TRADE SHOCKS:CONSEQUENCES AND POLICY RESPONSES IN DEVELOPING COUNTRIES
PAUL COLLIER AND JAN WILLEN GUNNING1994 年出版33 页ISBN：
