Dyfyniad APA

S K Stephenson & M L Ryder. (1968). Wool growth. Academic press.

Dyfyniad Arddull Chicago

S K Stephenson and M L Ryder. Wool Growth. Academic press, 1968.

Dyfyniad MLA

S K Stephenson and M L Ryder. Wool Growth. Academic press, 1968.

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