توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)
Obengo, D. M. (2011). Psychological factors associated with a decline in performance in mathematics in Kenyan technical training institutes: A case study of Machakos Technical Training Institute. Daystar University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)
Obengo, Dorothy Mueni. Psychological Factors Associated with a Decline in Performance in Mathematics in Kenyan Technical Training Institutes: A Case Study of Machakos Technical Training Institute. Nairobi: Daystar University, 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)
Obengo, Dorothy Mueni. Psychological Factors Associated with a Decline in Performance in Mathematics in Kenyan Technical Training Institutes: A Case Study of Machakos Technical Training Institute. Daystar University, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.