Dyfyniad APA

Thorndike, J. J. (1979). Discovery of lost worlds. American Heritage Pub. Co.

Dyfyniad Arddull Chicago

Thorndike, Joseph Jacobs. Discovery of Lost Worlds. New York: American Heritage Pub. Co, 1979.

Dyfyniad MLA

Thorndike, Joseph Jacobs. Discovery of Lost Worlds. American Heritage Pub. Co, 1979.

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