Não informado. (1983). Training and Education. Library Association, Training and Education Group.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Training and Education. London: Library Association, Training and Education Group, 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Training and Education. Library Association, Training and Education Group, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.