Guest, Greg Collecting qualitative data : A field manual for applied research - พิมพ์ครั้งที่ 1 - Thousand Oaks, CA : SAGE, 2013 - 355 ISBN: 9781412986847 Subjects--Topical Terms: 1.Qualitative Research 2.Social Sciences-Research National Library of Medicine Call No.: H 62 / G936C