Jonas, F. R. (1998). An investigation of consonant cluster reduction and glottalization in the pronunciation of english by some Malay secondary school students. Fakulti Pendidikan, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Jonas, Florence R.E. An Investigation of Consonant Cluster Reduction and Glottalization in the Pronunciation of English by Some Malay Secondary School Students. Bangi: Fakulti Pendidikan, Universiti Kebangsaan Malaysia, 1998.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Jonas, Florence R.E. An Investigation of Consonant Cluster Reduction and Glottalization in the Pronunciation of English by Some Malay Secondary School Students. Fakulti Pendidikan, Universiti Kebangsaan Malaysia, 1998.
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