The SAGE handbook of qualitative data collection. Los Angeles ; London ; New Delhi ; Singapore ; Wahington DC ; Melbourne : SAGE reference, [2018]. ©2018. xxvi, 708 stran. Available on Internet: <https://external.dandelon.com/download/attachments/dandelon/ids/FL0023D65EB193BB808A8C1258236005F888B.pdf> ISBN 978-1-4739-5213-3.