Rosenthal, Robert,  1933- <br/><br/>
Essentials of behavioral research :  methods and data analysis / 
Robert Rosenthal, Ralph L. Rosnow. 
 - 2a ed. 
 - United States of America :  McGraw-Hill,  1991. 
 - 692 p. :  gráfs., tablas 
 - McGraw-Hill series in psychology .
<br/><br/><label>ISBN: </label>0070539294 
<br/><br/><label>Encabezamiento--Tema: </label><br/>Psicología--Investigación--Metodología