Salkind, C. T. (1961). The contest problem book: Problems from the annual high school contests of the mathematical association of America. Random House.
Chicago-referens (17:e uppl.)Salkind, Charles T. The Contest Problem Book: Problems from the Annual High School Contests of the Mathematical Association of America. New York: Random House, 1961.
MLA-referens (9:e uppl.)Salkind, Charles T. The Contest Problem Book: Problems from the Annual High School Contests of the Mathematical Association of America. Random House, 1961.
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