Dyfyniad APA
Keen, M., Kim, Y. K., & Varsano, R. (2006). The "flat tax(es)": Principles and evidence. International Monetary Fund, Fiscal Affairs Dept..
Dyfyniad Arddull Chicago
Keen, Michael, Yitae Kevin Kim, and Ricardo Varsano. The "Flat Tax(es)": Principles and Evidence. Washington, D.C.: International Monetary Fund, Fiscal Affairs Dept., 2006.
Dyfyniad MLA
Keen, Michael, et al. The "Flat Tax(es)": Principles and Evidence. International Monetary Fund, Fiscal Affairs Dept., 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.