Ashraf, S. (1998). Basic quantitative methods for economics and business. CADPLAN Pub.
Cita Chicago (17th ed.)Ashraf, Shahid. Basic Quantitative Methods for Economics and Business. New delhi: CADPLAN Pub, 1998.
Cita MLA (9th ed.)Ashraf, Shahid. Basic Quantitative Methods for Economics and Business. CADPLAN Pub, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.