Grbich, Carol. Qualitative data analysis : an introduction - พิมพ์ครั้งที่ 2 - Thousand Oaks, CA : SAGE, 2013 - 336 ISBN: 9781446202975 Subjects--Topical Terms: 1.Social sciences-Research 2.Qualitative research National Library of Medicine Call No.: H 62 / G785Q