APA
(1991). Collier's encyclopedia with bibliography & index. New York: Macmillan Educational Company.
Chicago
1991. Collier's encyclopedia with bibliography & index. New York: Macmillan Educational Company.
Harvard
(1991). Collier's encyclopedia with bibliography & index. New York: Macmillan Educational Company.
MLA
Collier's encyclopedia with bibliography & index. New York: Macmillan Educational Company. 1991.
