(1973). English 900 book three. Collier Macmillan International.
芝加哥风格引文English 900 Book Three. New York: Collier Macmillan International, 1973.
MLA引文English 900 Book Three. Collier Macmillan International, 1973.
警告：这些引文格式不一定是100％准确.
APA引文