1. Global Specialty Chemicals (2012) MarketLine Industry Profile, 34
2. The Essential Chemical Industry -online. Retrieved 27 October, 2021, from https://www.essentialchemicalindustry.org/
3. Trade Kings Group. Retrieved 29 October, 2021, from https://www.tradekings.co.zm/
4. Unified Chemicals. Retrieved 29 October, 2021, from https://unifiedchemicals.com/
5. ACC (2021) American Chemical Council. Retrieved 11 November, 2021, from https://www.americanchemistry.com/about-acc