author = { Campbell, Donald T. AND Tyler, Bonnie B. },

title = { The construct validity of work-group morale measures. },

publisher = {American Psychological Association (APA)},

isbn = {1939-1854},

isbn = {0021-9010},

keywords = { Applied Psychology },

year = {1957},

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