{"source":"book","style":"apa","contributors": [{"function":"author","last":"Voss","first":"James","middle":"F ,"},{"function":"author","last":"Perkins","first":"David","middle":"N"},{"function":"author","last":"Segal","first":"Judith","middle":"W"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"Informal reasoning and education","publisher":"L. Erlbaum Associates","city":"Hillsdale, N.J.","year":"1991"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"22112953","isbn":"0805802088 9780805802085 0805802096 9780805802092"}