author = { Patton, Michael Quinn },

title = { Qualitative evaluation and research methods },

edition = { 2. ed., 11. print. } ,

publisher = {Sage},

isbn = {0803937792},

keywords = { Qualitative Sozialforschung , Evaluationsforschung , Methodologie },

year = {1993},

abstract = {Rev. ed. of: Qualitative evaluation methods},

address = { Newbury Park [u.a.] },

url = { http://slubdd.de/katalog?TN_libero_mab2 }