author = { Babbie, Earl R. },

title = { The practice of social research },

edition = { 5. ed., internat. student ed. } ,

publisher = {Wadsworth},

isbn = {053409726X},

isbn = {0534097227},

keywords = { Einführung , Sozialwissenschaften , Forschungsmethode },

year = {1989},

address = { Belmont, Calif. },

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