{"source":"journal","style":"apa","journal": {"title":"National geographic" },"contributors": [{"function":"author","last":"National Geographic Society (United States),"} ],"pubtype": {"main": "pubjournal"},"pubjournal": {"year":"2000"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"73475947","issn":"1568-1718"}