Dyfyniad APA

CALLAN. (1996). Environmental economics & managementtheory, policy, and applications. Irwin.

Dyfyniad Arddull Chicago

CALLAN. Environmental Economics & Managementtheory, Policy, and Applications. Irwin, 1996.

Dyfyniad MLA

CALLAN. Environmental Economics & Managementtheory, Policy, and Applications. Irwin, 1996.

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