The SAGE encyclopedia of social science research methods / Michael S. Lewis-Beck, Alan Bryman, Tim Futing Liao, eds. - Thousand Oaks (EE.UU.) : SAGE Publications, 2004 - 3 v. ISBN: 0-7619-2363-2 Subjects--Topical Terms: CIENCIAS SOCIALES--DICCIONARIOS Y ENCICLOPEDIAS Dewey Class. No.: REF 300.3 S129s