ENGLISH 900. (1976). English 900 book one. Collier Macmillan International.
芝加哥风格引文ENGLISH 900. English 900 Book One. New York: Collier Macmillan International, 1976.
MLA引文ENGLISH 900. English 900 Book One. Collier Macmillan International, 1976.
警告：这些引文格式不一定是100％准确.