1. Majeed Malak Al-Samarrai, Geography and Contemporary Research Methods, Al-Hilal Press, Damascus, 2009.
2. Edward Reskin, Urban Bikeway Design Guide National Association of City Transportation, New York, USA, 2014.
3. Ahmed Abdel-Rahim, Intelligent Transportation Systems, Theodora Smiljanic, Rijeka, Croatia, 2012.
4. Al-Sammak, Muhammad Azhar, Ahmad Hamid Al-Obaidi, Hashem Al-Hayali, The Geography of Transfer between Methodology and Application, Dar Al-Bazuri for Publishing and Distribution, Jordan, 2010.
5. A meeting with Sheikh Thaer Shaalan Jassim Al-Adwan on 1/7/2021.