Dyfyniad APA

(1999). Ibon facts and figures 1999. Ibon Foundation Databank and Research Center.

Dyfyniad Arddull Chicago

Ibon Facts and Figures 1999. Manila: Ibon Foundation Databank and Research Center, 1999.

Dyfyniad MLA

Ibon Facts and Figures 1999. Ibon Foundation Databank and Research Center, 1999.

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