Gillham, B. (2000). Case study research methods. Continuum.
Chicago-čujuhus (17. p.)Gillham, Bill. Case Study Research Methods. London, United Kingdom: Continuum, 2000.
MLA-čujuhus (9. p.)Gillham, Bill. Case Study Research Methods. Continuum, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.