@inbook{2642351,
author={Brenda Waning and Michael Montagne},
title={Appendix II: Critical Values of t Required to Reject the Null Hypothesis for a 2-Tailed Test},
booktitle={Pharmacoepidemiology: Principles and Practice},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2001},
url={accesspharmacy.mhmedical.com/content.aspx?aid=2642351}
}