1. OPEC: Annual Statistical Bulletinhttps://www.opec.org/opec_web/static_files_project/media/downloads/publications/ASB2016.pdf
2. Forecasting CO2 Emissions in the Persian Gulf States;Olabemiwo;Glob. J. Environ. Sci. Manag.,2017
3. Forecasting CO2 Emissions Lev Level in Saudi-Arabia (2014–2018) Using U Zeytun Time Series Statistical Software;Ahmed;Int. Res. J. Environ. Sci.,2016
4. Draft Outcome Document of the United Nations Summit for the Adoption of the Post—2015 Development Agendahttp://www.un.org/ga/search/view_doc.asp?symbol=A/69/L.85&Lang=E