Frenkel, J., Razin, A., & Symansky, S. (1991). International Vat Harmonization: Economic Effects. International Monetary Fund.
Dyfyniad Arddull ChicagoFrenkel, Jacob, Assaf Razin, and Steven Symansky. International Vat Harmonization: Economic Effects. Washington, D.C.: International Monetary Fund, 1991.
Dyfyniad MLAFrenkel, Jacob, et al. International Vat Harmonization: Economic Effects. International Monetary Fund, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.