Ubie, W. N. (2011). The effectiveness of using concept map as a learning tool on students' motivation to learn English Literature / Willie Nelson Ubie.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ubie, Willie Nelson. The Effectiveness of Using Concept Map as a Learning Tool on Students' Motivation to Learn English Literature / Willie Nelson Ubie. 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ubie, Willie Nelson. The Effectiveness of Using Concept Map as a Learning Tool on Students' Motivation to Learn English Literature / Willie Nelson Ubie. 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.