{"source":"book","style":"apa","contributors": [{"function":"author","last":"Christopher","first":"John"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"The city of gold and lead.","publisher":"Collier Books","city":"New York","year":"1970"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"804162","isbn":"002042700X 9780020427001"}