Yusuf, Y. M. (2014). Intra-party democracy at the grass root level in Nigeria: Candidate selection in the Peoples' Democratic Party, Kaduna North, 2007-2011. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Yusuf, Yahaya Musa. Intra-party Democracy at the Grass Root Level in Nigeria: Candidate Selection in the Peoples' Democratic Party, Kaduna North, 2007-2011. Kuala Lumpur: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Yusuf, Yahaya Musa. Intra-party Democracy at the Grass Root Level in Nigeria: Candidate Selection in the Peoples' Democratic Party, Kaduna North, 2007-2011. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2014.