Open water swimming : A complete guide for distance swimmer and triathletes 
Dean, Penny Lee. 
 -  Human Kinetics.  1998 
 - 223 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-88011-704-4 
<br/><br/><label>Dewey Class. No.: </label>797.21 D43e 1998