Dyfyniad APA

Howe, C. W. (1979). Natural resource economics: Issues, analysis, and policy. Wiley.

Dyfyniad Arddull Chicago

Howe, Charles W. Natural Resource Economics: Issues, Analysis, and Policy. New York: Wiley, 1979.

Dyfyniad MLA

Howe, Charles W. Natural Resource Economics: Issues, Analysis, and Policy. Wiley, 1979.

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