@inbook{1186964133,
author={Sandra L. Kaplan},
title={Sample Data Calculations},
booktitle={Outcome Measurement and Management: First Steps for the Practicing Clinician},
publisher={F. A. Davis Company},
address={New York, NY},
year={2007},
url={fadavisat.mhmedical.com/content.aspx?aid=1186964133}
}