* {{cite book | last=Zatsiorsky | first=Vladimir M. | last2=Kraemer | first2=William J. | title=Science and Practice of Strength Training | publisher=Human Kinetics | publication-place=Champaign, IL | date=2006 | isbn=978-0-7360-5628-1}}
<ref name="d451">{{cite book | last=Zatsiorsky | first=Vladimir M. | last2=Kraemer | first2=William J. | title=Science and Practice of Strength Training | publisher=Human Kinetics | publication-place=Champaign, IL | date=2006 | isbn=978-0-7360-5628-1 | page=}}</ref>