Rossman, Gretchen B. Learning in the field: An introduction to qualitative research - 3rd - Los Angeles Sage 2012 - xxvi,366p p. ISBN: 978-1-4129-8048-7 Subjects--Index Terms: Social sciences-Research-Methodology; LC Class. No.: 2b4 / Q2 Dewey Class. No.: 020.72 / ROS.G