Helmi Hashim, J. (2001). Cost of quality and quality performance: A case of Universiti Teknologi MARA (UiTM), Dungun, Arau and Segamat Branch Campuses / Jamalludin Helmi Hashim.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Helmi Hashim, Jamalludin. Cost of Quality and Quality Performance: A Case of Universiti Teknologi MARA (UiTM), Dungun, Arau and Segamat Branch Campuses / Jamalludin Helmi Hashim. 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Helmi Hashim, Jamalludin. Cost of Quality and Quality Performance: A Case of Universiti Teknologi MARA (UiTM), Dungun, Arau and Segamat Branch Campuses / Jamalludin Helmi Hashim. 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.