Thomson, J. B. (1893). A commercial arithmetic: Designed for academies, high schools, counting rooms, and business colleges. Maynard, Merrill, & Co..
Lua i Stíl Chicago (17ú heag.)Thomson, James B. A Commercial Arithmetic: Designed for Academies, High Schools, Counting Rooms, and Business Colleges. New York: Maynard, Merrill, & Co., 1893.
Lua MLA (8ú heag.)Thomson, James B. A Commercial Arithmetic: Designed for Academies, High Schools, Counting Rooms, and Business Colleges. Maynard, Merrill, & Co., 1893.
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