Siti Haryati Che Ya. (2007). Speaking anxiety among form five students of Sekolah Menengah Sultan Yahya Petra (2), Kuala Krai, Kelantan. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Siti Haryati Che Ya. Speaking Anxiety Among Form Five Students of Sekolah Menengah Sultan Yahya Petra (2), Kuala Krai, Kelantan. Gombak, Selangor: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Siti Haryati Che Ya. Speaking Anxiety Among Form Five Students of Sekolah Menengah Sultan Yahya Petra (2), Kuala Krai, Kelantan. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2007.