references:
- B. Gail Smith, 2007 August 31, Developing sustainable food supply chains, http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2610113
- Before It's News, 2010 June 20, Fertilizer, Farms, Factories and Food Service: MONIQA Tracks Edible Safety For the Entire Food Supply Chain, http://beforeitsnews.com/food-and-farming/2010/06/fertilizer-farms-factories-and-food-service-moniqa-tracks-edible-safety-for-the-entire-food-supply-chain-82054.html
- DEFRA. DEFRA Publications; London, UK: 2002. The strategy for sustainable farming and food: facing the future. p. 51.
- McDonald's, Meet the Suppliers, https://mcdonalds.com.au/about-maccas/our-supply-chain/next-steps