{"source":"book","style":"apa","contributors": [{"function":"author","last":"Levin","first":"Jack"},{"function":"author","last":"Fox","first":"James","middle":"Alan"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"Elementary statistics in social research : the essentials","publisher":"Pearson Allyn & Bacon","city":"Boston","year":"2007"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"62889157","isbn":"020548493X 9780205484935"}