Dyfyniad APA

Hughes, N. F. (1989). Fossils as information. Cambridge University Press.

Dyfyniad Arddull Chicago

Hughes, Norman F. Fossils as Information. New York: Cambridge University Press, 1989.

Dyfyniad MLA

Hughes, Norman F. Fossils as Information. Cambridge University Press, 1989.

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