Dyfyniad APA

Spurr, S. H. (1963). Growth of Douglas fir in New Zealand. New Zealand Forest Service.

Dyfyniad Arddull Chicago

Spurr, Stephen Hopkins. Growth of Douglas Fir in New Zealand. Wellington: New Zealand Forest Service, 1963.

Dyfyniad MLA

Spurr, Stephen Hopkins. Growth of Douglas Fir in New Zealand. New Zealand Forest Service, 1963.

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