GIBBS, Graham. Analyzing qualitative data. 2nd edition. Los Angeles ; London ; New Delhi ; Singapore ; Washington DC ; Melbourne : Sage, [2018]. ©2018. 1 online zdroj (xviii, 210 stran). The Sage qualitative research kit. Available on Internet: <https://ebookcentral.proquest.com/lib/ujep-ebooks/reader.action?docID=6995197> ISBN 9781526426130.