X. . Ruiz, «Held, Birger and Wallensteen, Peter, Peacekeeping operations: global patterns of intervention and success, 1940-2000, Folke Bernadotte Academy Publications, Estocolmo, 2004», UNISCI discuss. pap., n.º 8, pp. 21–2, ene. 2005, Accedido: nov. 25, 2024. Disponible en: https://revistas.ucm.es/index.php/UNIS/article/view/UNIS0505230021A