Flick, U. (2017). An Introduction to qualitative research. Sage publication.
Lua i Stíl Chicago (17ú heag.)Flick, Ume. An Introduction to Qualitative Research. New Delhi: Sage publication, 2017.
Lua MLA (9ú heag.)Flick, Ume. An Introduction to Qualitative Research. Sage publication, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.