Dyfyniad APA

Dott, R. H. (1976). Evolution of the earth (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Dott, Robert H. Evolution of the Earth. 2nd ed. New York: McGraw-Hill, 1976.

Dyfyniad MLA

Dott, Robert H. Evolution of the Earth. 2nd ed. McGraw-Hill, 1976.

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