العنزي Mr. Hakem Bashir Al-Enzi أ. ح. ب. and القاعود Prof. Ibrahim Abd alqadeir Al-Qaoud أ. د. إ. ا., “Designing an Interactive E-Learning Unit and Measuring Its Impact on the Achievement and Enhancing the Motivation of Learning in Social Studies Subject Among First Secondary Students in Kingdom of Saudi Arabia”, التعليم المفتوح, vol. 8, no. 14, Feb. 2020.