@inbook{1120404767, author={Carol L. Archie, MD and Ashley S. Roman, MD, MPH}, editor={DeCherney, Alan H. and Nathan, Lauren and Laufer, Neri and Roman, Ashley S.}, title={Trabajo de parto y partos normales y anormales}, booktitle={Diagnóstico y tratamiento ginecoobstétricos, 11e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2015}, url={accessmedicina.mhmedical.com/content.aspx?aid=1120404767} }