Não informado. (2002). Durham working papers in linguistics. University of Durham, Department of Linguistics and English Language.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Durham Working Papers in Linguistics. Durham, Inglaterra: University of Durham, Department of Linguistics and English Language, 2002.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Durham Working Papers in Linguistics. University of Durham, Department of Linguistics and English Language, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.