Dyfyniad APA

Dott, R. H., & Batten, R. L. (1976). Evolution of the earth (2d ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Dott, Robert H., and Roger Lyman Batten. Evolution of the Earth. 2d ed. New York: McGraw-Hill, 1976.

Dyfyniad MLA

Dott, Robert H., and Roger Lyman Batten. Evolution of the Earth. 2d ed. McGraw-Hill, 1976.

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