1. Institute of Medicine (IOM). (2007). Ending the tobacco problem: A blueprint for the nation. Washington, DC: The National Academies Press. http://www2.aap.org/richmondcenter/pdfs/IOMReport_BluepintforNation.pdf .
2. Al-Haqwi, A. I., Tamim, H., & Asery, A. (2010). Knowledge, attitude and practice of tobacco smoking by medical students in Riyadh, Saudi Arabia. Annals of Thoracic Medicine, 5(3). doi: 10.4103/1817-1737.65044 .
3. Wali, S. O. (2011). Smoking habits among medical students in Western Saudi Arabia. Saudi Medical Journal, 32(8), 843–848.
4. Jarallah, J. S., al-Rubeaan, K. A., al-Nuaim, A. R., al-Ruhaily, A. A., & Kalantan, K. A. (1999). Prevalence and determinants of smoking in three regions of Saudi Arabia. Tobacco Control, 8, 53–56.
5. World Health Organization Regional Office for the Eastern Mediterranean. (2010). Saudi Arabia profile. http://www.emro.who.int/emrinfo/index.aspx?Ctry=saa .