Não informado. (1989). UCL working papers in linguistics. University College, Department of Phonetics and Linguistics.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. UCL Working Papers in Linguistics. London: University College, Department of Phonetics and Linguistics, 1989.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. UCL Working Papers in Linguistics. University College, Department of Phonetics and Linguistics, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.