PATTON, M. Q. (1982). Qualitative evaluation methods. Sage Pub.
Chicago-čujuhus (17. p.)PATTON, Michael Quinn. Qualitative Evaluation Methods. London: Sage Pub, 1982.
MLA-čujuhus (9. p.)PATTON, Michael Quinn. Qualitative Evaluation Methods. Sage Pub, 1982.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.