Nik Ab Kadir, N. N. A. (2014). An investigation on oral communication apprehension in classrooms among final year undergraduates of electrical engineering in UiTM / Nik Nurul Ain Nik Ab Kadir.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nik Ab Kadir, Nik Nurul Ain. An Investigation on Oral Communication Apprehension in Classrooms Among Final Year Undergraduates of Electrical engineering in UiTM / Nik Nurul Ain Nik Ab Kadir. 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nik Ab Kadir, Nik Nurul Ain. An Investigation on Oral Communication Apprehension in Classrooms Among Final Year Undergraduates of Electrical engineering in UiTM / Nik Nurul Ain Nik Ab Kadir. 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.