ABBA, A. (2007). The Northern elements progressive union and the politics of radical nationalism in Nigeria, 1938-1960. The Abdullahi Smith Centre for Historical Research.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিABBA, Alkasum. The Northern Elements Progressive Union and the Politics of Radical Nationalism in Nigeria, 1938-1960. The Abdullahi Smith Centre for Historical Research, 2007.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিABBA, Alkasum. The Northern Elements Progressive Union and the Politics of Radical Nationalism in Nigeria, 1938-1960. The Abdullahi Smith Centre for Historical Research, 2007.
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