Informal Governance in the
European Union, Thomas Christiansen, Simona Piattoni, eds.
SSRN: Introduction https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1752191
Cornell University Press http://www.cornellpress.cornell.edu/book/?GCOI=80140100263920
Google Books https://books.google.com/books/about/Informal_Governance_in_the_European_Unio.html?hl=pt-BR&id=-pwMzSoZXfIC
Project Muse https://muse.jhu.edu/chapter/999810
Booksee http://en.booksee.org/book/695463