{"source":"book","style":"apa","contributors": [{"function":"author","last":"Siren","first":"Osvald"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"The walls and gates of Peking, researches and impressions","publisher":"John Lane","city":"London","year":"1924"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"2040961"}