Dyfyniad APA

White, A. T. (1955). All about rocks and minerals. Random House.

Dyfyniad Arddull Chicago

White, Anne Terry. All About Rocks and Minerals. New York: Random House, 1955.

Dyfyniad MLA

White, Anne Terry. All About Rocks and Minerals. Random House, 1955.

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