Slater, J. (2000). Practical business math procedures [ada CD]. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Slater, Jeffrey. Practical Business Math Procedures [ada CD]. McGraw-Hill, 2000.
Lua MLA (8ú heag.)Slater, Jeffrey. Practical Business Math Procedures [ada CD]. McGraw-Hill, 2000.
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