ECONOMIST INTELLIGENCE UNIT. (1999). BEST PRACTICES ENVIRONMENT. UNIVERSITY PRESS.
芝加哥风格引文ECONOMIST INTELLIGENCE UNIT. BEST PRACTICES ENVIRONMENT. NEW DELHI: UNIVERSITY PRESS, 1999.
MLA引文ECONOMIST INTELLIGENCE UNIT. BEST PRACTICES ENVIRONMENT. UNIVERSITY PRESS, 1999.
警告：这些引文格式不一定是100％准确.