Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (9th εκδ.)

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.