Erin A. McGill <br/><br/>
Principles of group fitness instruction 

 -  Jones & Bartlett  2019 
<br/><br/> includes references , glossary and index 
<br/><br/><label>ISBN: </label>9781284402803 
<br/><br/><label>Dewey Class. No.: </label>613.7 P93 2019