Eltigani, H. M. A. (1995). An investigation into the impact of quality management systems upon construction productivity at the site level. Strathclyde University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Eltigani, Hadi Mohammed Ahmed. An Investigation into the Impact of Quality Management Systems upon Construction Productivity at the Site Level. Glasgow: Strathclyde University, 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Eltigani, Hadi Mohammed Ahmed. An Investigation into the Impact of Quality Management Systems upon Construction Productivity at the Site Level. Strathclyde University, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.