Dyfyniad APA

Gibbons, D. C. (1986). The economic value of water. Resources for the Future ; Distributed by Johns Hopkins University Press.

Dyfyniad Arddull Chicago

Gibbons, Diana C. The Economic Value of Water. Washington, D.C. : [Baltimore]: Resources for the Future ; Distributed by Johns Hopkins University Press, 1986.

Dyfyniad MLA

Gibbons, Diana C. The Economic Value of Water. Resources for the Future ; Distributed by Johns Hopkins University Press, 1986.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.