Isuman, J. U. (1957). Need for more states in Nigeria: With some submissions for a mid-west state. Printed by Hamzat Printing Works.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Isuman, Jaafaru Ushomo. Need for More States in Nigeria: With Some Submissions for a Mid-west State. Benin Cty, Nigeria: Printed by Hamzat Printing Works, 1957.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Isuman, Jaafaru Ushomo. Need for More States in Nigeria: With Some Submissions for a Mid-west State. Printed by Hamzat Printing Works, 1957.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.