3Bexaard, H. Russell,"Unstructured and Semistructured Interviewing", Chapter 9 in Research Methods in Cultural Anthropology, Newbury Park: Sage publications, 1988, PP. 203-224.
5Fontana,Andrea & Frey,James H. ,"Interviewing:The Art of Science",Norman K. Denzin & Yvonna S.Lincoln eds., Handbook of Qualitative Research, Thousand Oaks,: Sage Publucations, 1994, pp. 361-376.