Bell, J. (1999). Doing your research project: A guide for first-time researchers in education and social science. Open University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bell, Judith. Doing Your Research Project: A Guide for First-time Researchers in Education and Social Science. Buckingham: Open University Press, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Bell, Judith. Doing Your Research Project: A Guide for First-time Researchers in Education and Social Science. Open University Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.