Dyfyniad APA

Kula, E. (1988). The economics of forestry: Modern theory and practice. Timber Press.

Dyfyniad Arddull Chicago

Kula, Erhun. The Economics of Forestry: Modern Theory and Practice. Portland, Or.: Timber Press, 1988.

Dyfyniad MLA

Kula, Erhun. The Economics of Forestry: Modern Theory and Practice. Timber Press, 1988.

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