Swindle Robert E. (1983). Business math basic (2nd.). Kent Pub. Co..
Lua i Stíl Chicago (17ú heag.)Swindle Robert E. Business Math Basic. 2nd. Boston: Kent Pub. Co., 1983.
Lua MLA (9ú heag.)Swindle Robert E. Business Math Basic. 2nd. Kent Pub. Co., 1983.
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