Dyfyniad APA

Tietenberg, T. (1988). Environmental and natural resource economics. Scott, Foresman.

Dyfyniad Arddull Chicago

Tietenberg, Tom. Environmental and Natural Resource Economics. Scott, Foresman, 1988.

Dyfyniad MLA

Tietenberg, Tom. Environmental and Natural Resource Economics. Scott, Foresman, 1988.

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