Older Students Research Group & Open University. Regional Academic Services. (1984). Older students in the Open University. Regional Academic Services, Open University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Older Students Research Group و Open University. Regional Academic Services. Older Students in the Open University. [Milton Keynes]: Regional Academic Services, Open University, 1984.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Older Students Research Group و Open University. Regional Academic Services. Older Students in the Open University. Regional Academic Services, Open University, 1984.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.