(1972). The world almanac and book of facts 1972. New York, N. Y.: Newspaper Enterprise Association.
Citación estilo ChicagoThe World Almanac and Book of Facts 1972. New York, N. Y.: Newspaper Enterprise Association, 1972.
Cita MLAThe World Almanac and Book of Facts 1972. New York, N. Y.: Newspaper Enterprise Association, 1972.
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