Degryse, C., & Tilly, P. (2013). 1973-2013: 40 years of history of the European Trade Union Confederation. Brussels: ETUI.
Lua i Stíl Chicago (17ú heag.)Degryse, Christophe, agus Pierre Tilly. 1973-2013: 40 Years of History of the European Trade Union Confederation. Brussels: ETUI, 2013.
Lua MLA (8ú heag.)Degryse, Christophe, agus Pierre Tilly. 1973-2013: 40 Years of History of the European Trade Union Confederation. Brussels: ETUI, 2013.
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