Dyfyniad APA

Gutman, B. (1990). Swimming: Go for it. Marshall Cavendish.

Dyfyniad Arddull Chicago

Gutman, Bill. Swimming: Go for It. New York: Marshall Cavendish, 1990.

Dyfyniad MLA

Gutman, Bill. Swimming: Go for It. Marshall Cavendish, 1990.

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