Vazsonyi, A., & Spirer, H. F. (1987). Quantitative analysis for business. PHI.
Dyfyniad Arddull ChicagoVazsonyi, Andrew, and Herbert F. Spirer. Quantitative Analysis for Business. New Delhi: PHI, 1987.
Dyfyniad MLAVazsonyi, Andrew, and Herbert F. Spirer. Quantitative Analysis for Business. PHI, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.