Balbir Kaur Joginder Singh. (2007). Implementing the English oral component in lower secondary Malaysian schools teachers' perspective. Fakulti Sains Sosial Dan Kemanusiaan, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Balbir Kaur Joginder Singh. Implementing the English Oral Component in Lower Secondary Malaysian Schools Teachers' Perspective. Bangi: Fakulti Sains Sosial Dan Kemanusiaan, Universiti Kebangsaan Malaysia, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Balbir Kaur Joginder Singh. Implementing the English Oral Component in Lower Secondary Malaysian Schools Teachers' Perspective. Fakulti Sains Sosial Dan Kemanusiaan, Universiti Kebangsaan Malaysia, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.