Akwuba, G. K., & Ako, B. D. (2014). A Comparative Study of Resistivity Sounding Curves from Two Drainage Areas of Kafanchan, Kaduna State. Obafemi Awolowo University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Akwuba, Godwin Kingsley, و B. D. Ako. A Comparative Study of Resistivity Sounding Curves from Two Drainage Areas of Kafanchan, Kaduna State. Obafemi Awolowo University, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Akwuba, Godwin Kingsley, و B. D. Ako. A Comparative Study of Resistivity Sounding Curves from Two Drainage Areas of Kafanchan, Kaduna State. Obafemi Awolowo University, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.