1. Sustainability 2.0; Asda's Environmental Sustainability Targets 2010–2015;Asda,2011
2. Asda's Carbon Footprint 2010;Asda,2011
3. Influencing climate change policy: the effect of shareholder pressure and firm environmental performance;Clark;Business & Society,2012
4. Leading the Way: A Revolutionary Approach to Social Responsibility. Ethical Operating Plan (2011–2013);Co-operative Group,2011
5. Sustainability Report 2010;Co-operative Group,2011