1. AASHE (2011), Mandatory Student Fees for Renewable Energy and Energy Efficiency, Association for the Advancement of Sustainability in Higher Education, available at: http://aashe.org/resources/mandatory‐student‐fees‐renewable‐energy‐and‐energy‐efficiency (accessed 10 February 2011).
2. ACUPCC (2010), ACUPCC Reporting System – Tangible Action Statistics, available at: http://acupcc.aashe.org/stats/tangible‐actions/ (accessed 20 November 2010).
3. Roundtable: Greening the Flock, How should religious institutions foster sustainability?
4. Why Do Firms Volunteer to Exceed Environmental Regulations? Understanding Participation in EPA's 33/50 Program
5. Carlson, S. (2010), “Audio: Christian colleges' powerful take on sustainability”, The Chronicle of Higher Education, October 12.