1. Marketing budgets. Available at: https://deloitte.wsj.com/articles/who-has-the-biggest-marketing-budgets-1485234137. Accessed 07 Sept 2023.
2. Words that sell. Available at: https://www.copywritematters.com/copywriter-words-that-sell/. Accessed 07 Sept 2023.
3. Global sustainability. Available at: https://engageforgood.com/2015-nielsen-global-sustainability-report/. Accessed 07 Sept 2023.
4. Perception of natural foods. Available at: https://www.ift.org/news-and-publications/food-technology-magazine/issues/2019/july/features/consumer-perceptions-of-natural-foods. Accessed 07 Sept 2023.
5. Natural on food labelling. Available at: https://www.fda.gov/food/food-labeling-nutrition/use-term-natural-food-labeling. Accessed 07 Sept 2023.