Miles, Matthew B. Qualitative data analysis: an expanded source book/ Matthew B. Miles and A. Michael Huberman - 2a ed. - Thousand Oaks, Calif. : SAGE Publications, CAo., c1994. - 317p. - c . ISBN: 0-8039-4653-8 Subjects--Topical Terms: Recolección de Datos Dewey Class. No.: 001.4222 / M396q