found: His Selected speeches, 1978?:t.p. (H.E. Joseph Lagu, pres. High Exec. Council, 1st ass't Secretary General, Southern Region, Sudan)
found: Sudan, 2006:t.p. (Lt. Gen. Joseph Lagu, (retd). Hon. D Letts) p. 21 (b. Nov. 21, 1931, in Momokwe)
found: Dictionary of African Biography, accessed February 19, 2015, via Oxford African American Studies Center database:(Lagu, Joseph; foreign military officer, political figure; born in 1931 in Sudan; graduated from Omdurman military college; became lieutenant in the Sudan army; deserted from army and joined guerrilla movement Anyanya (1963); was supplied with money and arms by Israeli to unify the various Anyanya groups under his leadership and expand the scale of the war (1967); supported Addis Ababa Agreement with Nimeiry's government (1972) for an autonomous regional government in the southern capital of Juba in Equatoria; became major-general in Sudan army, president of the southern government and second vice-president in the national government (1978-1982); ambassador of Sudan, London (1985-1990), (1992-2005) and to the United Nations in New York (1990-1992); returned to Equatoria, began writing memoires)