1. AASHE(2019).STARS Technical Manual Version 2.2. Association for the Advancement of Sustainability in Higher Education.1–322.https://stars.aashe.org/wp‐content/uploads/2019/07/STARS‐2.2‐Technical‐Manual.pdf(accessed 25 November 2021).
2. Policy efficiency in the field of food sustainability. The adjusted food agriculture and nutrition index
3. Alshuwaikhat H.andAbubakar I.(2008)An integrated approach to achieving campus sustainability: Assessment of the current campus environmental management practices.Proceedings of the 4th International Barcelona Conference on Higher Education vol. 7 Higher Education for Sustainable Development Barcelona Spain(March 2008). GUNI.http://www.guni‐rmies.net(accessed 25 November 2021).