Não informado. (1964). Swimming technique. American Swimming Coaches Association.
Chicago-referens (17:e uppl.)Não informado. Swimming Technique. Los Angeles, Calif: American Swimming Coaches Association, 1964.
MLA-referens (8:e uppl.)Não informado. Swimming Technique. American Swimming Coaches Association, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.