Angrosino, M. V. 1., Denzin, N. K., Lincoln, Y. S., Russell Bernard, H., Beverley, J. R. 1., Bochner, A. P., & Brady, I. (2000). Handbook of qualitative research (2. edition.). Thousand Oaks: Sage Publications, Inc..

Angrosino, Michael V. 1947-, Norman K. Denzin, Yvonna S. Lincoln, H. Russell Bernard, John Randolph 1943- Beverley, Arthur P. Bochner, and Ivan Brady. Handbook of Qualitative Research. 2. edition. Thousand Oaks: Sage Publications, Inc., 2000.

Angrosino, Michael V. 1947-, et al. Handbook of Qualitative Research. 2. edition. Thousand Oaks: Sage Publications, Inc., 2000.