JEFES DE ESTADO Y GOBIERNO. Declaration of Addis Ababa to the Heads of State and Government on the 25th Anniversary of the Organisation of African Unity. Revista Mexicana de Política Exterior, [S. l.], n. 21, p. 52–56, 1988. Disponível em: https://revistadigital.sre.gob.mx/index.php/rmpe/article/view/2040. Acesso em: 18 may. 2024.