Dyfyniad APA

(1968). Swimming and water safety textbook. American Nat. red cross s.

Dyfyniad Arddull Chicago

Swimming and Water Safety Textbook. Washington: American Nat. red cross s, 1968.

Dyfyniad MLA

Swimming and Water Safety Textbook. American Nat. red cross s, 1968.

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