Dyfyniad APA

(1985). Toward an international policy of environmental research. minister de l'environnment.

Dyfyniad Arddull Chicago

Toward an International Policy of Environmental Research. Paris: minister de l'environnment, 1985.

Dyfyniad MLA

Toward an International Policy of Environmental Research. minister de l'environnment, 1985.

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