Zulkifli bin Hamzah. (1995). An Error analysis in the written English of Malay students at Sekolah Nasiruddin Shah, Besut, Terengganu: A case study. International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Zulkifli bin Hamzah. An Error Analysis in the Written English of Malay Students at Sekolah Nasiruddin Shah, Besut, Terengganu: A Case Study. Petaling Jaya: International Islamic University Malaysia, 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Zulkifli bin Hamzah. An Error Analysis in the Written English of Malay Students at Sekolah Nasiruddin Shah, Besut, Terengganu: A Case Study. International Islamic University Malaysia, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.