Dyfyniad APA

(1991). SYLVA PLUS NEWS AND VIEWS. INSTITUTE OF FOREST GENETICS OF TREE BREEDING.

Dyfyniad Arddull Chicago

SYLVA PLUS NEWS AND VIEWS. COIMBATORE: INSTITUTE OF FOREST GENETICS OF TREE BREEDING, 1991.

Dyfyniad MLA

SYLVA PLUS NEWS AND VIEWS. INSTITUTE OF FOREST GENETICS OF TREE BREEDING, 1991.

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