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.
Čikaški stil citiranja (17. izdanje)ABBA, Alkasum. The Northern Elements Progressive Union and the Politics of Radical Nationalism in Nigeria, 1938-1960. The Abdullahi Smith Centre for Historical Research, 2007.
MLA način citiranja (9. izdanje)ABBA, 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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