Dyfyniad APA

Lowe, J. F., & Lewis, D. (1980). The economics of environmental management. P. Allan.

Dyfyniad Arddull Chicago

Lowe, J. F., and David Lewis. The Economics of Environmental Management. Deddington, Oxford: P. Allan, 1980.

Dyfyniad MLA

Lowe, J. F., and David Lewis. The Economics of Environmental Management. P. Allan, 1980.

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