Dyfyniad APA

Randall, A. (1987). Resource economics: An economic approach to natural resource and environmental policy (2nd ed.). John Willey & Sons.

Dyfyniad Arddull Chicago

Randall, Alan. Resource Economics: An Economic Approach to Natural Resource and Environmental Policy. 2nd ed. New York: John Willey & Sons, 1987.

Dyfyniad MLA

Randall, Alan. Resource Economics: An Economic Approach to Natural Resource and Environmental Policy. 2nd ed. John Willey & Sons, 1987.

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