APA (7th ed.) Citation
(1989). World almanac and book of facts 1989 (ed.). World Almanac books.
Chicago Style (17th ed.) Citation
World Almanac and Book of Facts 1989. ed. New Jersey: World Almanac books, 1989.
MLA (9th ed.) Citation
World Almanac and Book of Facts 1989. ed. World Almanac books, 1989.
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