Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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