Guest, Greg, Collecting qualitative data : a field manual for applied research / Greg Guest, Emily E. Namey and Marilyn L. Mitchell. - Thousand Oaks : SAGE Publications, c2013. - xviii, 355 p. : ill. ; 24 cm. ISBN: 9781412986847 (pbk. : alk. paper) Subjects--Topical Terms: Qualitative research.Social sciences Dewey Class. No.: 001.42 / GUE P13C