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Dyfyniad Arddull Chicago.Just, Richard E., Darrell L. .Hueth, and Andrew Schmitz. Applied Welfare Economics and Public Policy. .Englewood Cliffs, N.J: Prentice-Hall, 1982.
Dyfyniad MLA.Just, Richard E., et al. Applied Welfare Economics and Public Policy. Prentice-Hall, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.