@inbook{1143538206, author={Kenneth J. Ryan and C. George Ray}, title={Parásitos. Conceptos básicos}, booktitle={Sherris. Microbiología médica, 6e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2017}, url={accessmedicina.mhmedical.com/content.aspx?aid=1143538206} }