1. Online focus groups;Abrams,2017
2. The theory of planned behaviour;Ajzen;Organ. Behav. Hum. Decis. Process.,1991
3. How green marketing can create a sustainable competitive advantage for a business;Arseculeratne;Int. Bus. Res.,2014
4. Asda. (2020). Asda Opens New Sustainability Store. https://corporate.asda.com/newsroom/2020/10/20/asda-opens-new-sustainability-store.
5. Asda. (2021). Asda to rollout refill zones to more stores. https://corporate.asda.com/newsroom/2021/06/16/asda-to-rollout-refill-zones-to-more-stores.