Dyfyniad APA
Norton, B. (1994). Toward unity among environmentalists (New ed.). Oxford University Press.
Dyfyniad Arddull Chicago
Norton, Bryan. Toward Unity Among Environmentalists. New ed. New York: Oxford University Press, 1994.
Dyfyniad MLA
Norton, Bryan. Toward Unity Among Environmentalists. New ed. Oxford University Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.