Não informado. (1964). Swimming technique. American Swimming Coaches Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Swimming Technique. Los Angeles, Calif: American Swimming Coaches Association, 1964.
Lua MLA (8ú heag.)Não informado. Swimming Technique. American Swimming Coaches Association, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.