Dyfyniad APA

FAO. (1990). Unasylva 1990( N. 160, 162, 163, 170, 171, 172, 173, 174, 179): An international journal of forestry and forest industries: Đóng bộ. Rome: FAO.

Dyfyniad Arddull Chicago

FAO. Unasylva 1990( N. 160, 162, 163, 170, 171, 172, 173, 174, 179): An International Journal of Forestry and Forest Industries: Đóng Bộ. Rome: FAO, 1990.

Dyfyniad MLA

FAO. Unasylva 1990( N. 160, 162, 163, 170, 171, 172, 173, 174, 179): An International Journal of Forestry and Forest Industries: Đóng Bộ. Rome: FAO, 1990.

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