Media type: E-Article Title: Clubs of Clubs: Fragmentation in the Network of Intergovernmental Organizations Contributor: Greenhill, Brian; Lupu, Yonatan imprint: Oxford University Press (OUP), 2017 Published in: International Studies Quarterly Language: English DOI: 10.1093/isq/sqx001 ISSN: 0020-8833; 1468-2478 Origination: Footnote: