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توثيق أسلوب شيكاغو (الطبعة السابعة عشر)(5768084), Khalid Al-Saad, Marwa El-Azazy (14152794), Ahmed A. Issa (14152791), Asma Al-Yafie (18615100), Ahmed S. El-Shafie (14151696), Maetha Al-Sulaiti (14590861), و Basem Shomar (16936971). Recycling of Date Pits Into a Green Adsorbent for Removal of Heavy Metals: A Fractional Factorial Design-Based Approach. 2019.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)(5768084), Khalid Al-Saad, et al. Recycling of Date Pits Into a Green Adsorbent for Removal of Heavy Metals: A Fractional Factorial Design-Based Approach. 2019.