@inbook{1154797963, author={Scott K. Powers and Edward T. Howley}, title={Ergogenic Aids}, booktitle={Exercise Physiology: Theory and Application to Fitness and Performance, 10e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accessphysiotherapy.mhmedical.com/content.aspx?aid=1154797963} }