Alnahhal, A. M. E. (2020). Performance evaluation of lightweight normal and geopolymer foamed concrete using palm oil fuel ash as partial replacement of binder.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Alnahhal, Ahmed M. E. Performance Evaluation of Lightweight Normal and Geopolymer Foamed Concrete Using Palm Oil Fuel Ash as Partial Replacement of Binder. 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Alnahhal, Ahmed M. E. Performance Evaluation of Lightweight Normal and Geopolymer Foamed Concrete Using Palm Oil Fuel Ash as Partial Replacement of Binder. 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.