Dyfyniad APA

Firth, P., & Fisher, S. G. (1991). Global climate change and freshwater ecosystems. Springer-Verlag.

Dyfyniad Arddull Chicago

Firth, Penelope, and Stuart G. Fisher. Global Climate Change and Freshwater Ecosystems. New York: Springer-Verlag, 1991.

Dyfyniad MLA

Firth, Penelope, and Stuart G. Fisher. Global Climate Change and Freshwater Ecosystems. Springer-Verlag, 1991.

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