Stake, R. E. (2010). Qualitative research: Studying how things work (Primera edición.). The Gilford Press.
Lua i Stíl Chicago (17ú heag.)Stake, Robert E. Qualitative Research: Studying How Things Work. Primera edición. New York: The Gilford Press, 2010.
Lua MLA (8ú heag.)Stake, Robert E. Qualitative Research: Studying How Things Work. Primera edición. The Gilford Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.