Great Britain & Great Britain. Foreign and Commonwealth Office. (1981). Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the democratic Republic of the Sudan on certain commercial debts. Khartoum, 25 August 1980. H.M.S.O..
Citação do estilo Chicago (17ª ed.)Great Britain e Great Britain. Foreign and Commonwealth Office. Agreement Between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the Democratic Republic of the Sudan on Certain Commercial Debts. Khartoum, 25 August 1980. London: H.M.S.O., 1981.
Citação MLA (8ª ed.)Great Britain e Great Britain. Foreign and Commonwealth Office. Agreement Between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the Democratic Republic of the Sudan on Certain Commercial Debts. Khartoum, 25 August 1980. H.M.S.O., 1981.