O'Hagan, S. (2014). Variability in assessor responses to undergraduate essays: An issue for assessment quality in higher education. Peter Lang.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)O'Hagan, Sally. Variability in Assessor Responses to Undergraduate Essays: An Issue for Assessment Quality in Higher Education. Bern: Peter Lang, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)O'Hagan, Sally. Variability in Assessor Responses to Undergraduate Essays: An Issue for Assessment Quality in Higher Education. Peter Lang, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.