1. Abrash, Barbara, Stevenson & Howell: A Firm of Flavour and Fragrance, London, Greater London Industrial Archeology Society, 1982.
2. AG Barr plc, “Scotland’s Favourite Man Given Brand ‘Bru’ Look” [Press release], 2007.
3. AG Barr plc, “Brand facts”,
agbarr.co.uk/our-brands/irn-bru
, consulted January 2020.
4. AG Barr plc, “The phenomenal AG Barr story”,
https://www.agbarr.co.uk/about-us/our-history/timeline/
, consulted January 2020.
5. “Application Has Been Made at Trenton NJ”, American Perfumer and Essential Oil Review, Vol. 13, No. 6, August 1918, p. 196.