Hamel, J., Dufour, S., & Fortin, D. (1993). Case study methods. Sage.
Lua i Stíl Chicago (17ú heag.)Hamel, Jacques, Stephane Dufour, agus Dominic Fortin. Case Study Methods. Newbury Park: Sage, 1993.
Lua MLA (9ú heag.)Hamel, Jacques, et al. Case Study Methods. Sage, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.