?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Nelly&rft.au=Orozco+Gonz%C3%A1lez%2C+Nelly&rft.aulast=Orozco+Gonz%C3%A1lez&rft.date=2021&rft.tpages=164&rft.isbn=9788411020121&rft.btitle=Estad%C3%ADstica+II&rft.genre=book