1. AfDB. (2014) Green growth Sierra Leone: investing in environmentally sound economic growth. African Development Bank, Tunis (www.afdb.org/fileadmin/ uploads/afdb/Documents/Project-and-Operations/Sierra_
2. AllenC. (2012). A green economy knowledge sharing platform: Exploring options. UNCSD Secretariat.
3. The green economy postRio+20;E. B.Barbier;Science,2013
4. Barbier, E. B. (2014). Whither the green economy? Triple Crisis. (http:// triplecrisis.com/whither-the-green-economy/)
5. Barnett P (2015) If what gets measured gets managed, measuring the wrong thing matters Corporate Finance Review.