a. (1987). World Resousces 1987. New York: Basic Books.
Trích dẫn kiểu Chicagoa. World Resousces 1987. New York: Basic Books, 1987.
MLA引文a. World Resousces 1987. New York: Basic Books, 1987.
警告：這些引文格式不一定是100％准確.
APA引文
a. (1987). World Resousces 1987. New York: Basic Books.
Trích dẫn kiểu Chicagoa. World Resousces 1987. New York: Basic Books, 1987.
MLA引文a. World Resousces 1987. New York: Basic Books, 1987.