Ashraf, S. (1998). Basic quantitative methods for economics and business. CADPLAN Pub.
Lua i Stíl Chicago (17ú heag.)Ashraf, Shahid. Basic Quantitative Methods for Economics and Business. New delhi: CADPLAN Pub, 1998.
Lua MLA (9ú heag.)Ashraf, Shahid. Basic Quantitative Methods for Economics and Business. CADPLAN Pub, 1998.
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