APA
Brown L. R., . (1997). State of the World 1997. New York: W.W. Norton & Company.
Chicago
Brown Lester R, . 1997. State of the World 1997. New York: W.W. Norton & Company.
Harvard
Brown L. R., . (1997). State of the World 1997. New York: W.W. Norton & Company.
MLA
Brown Lester R, . State of the World 1997. New York: W.W. Norton & Company. 1997.