1. Journal of the Board of Agriculture, April 1915–March 1916 https://archive.org/details/dli.ernet.232728/mode/2up (accessed 25/1/2024).
2. Journal of the Board of Agriculture, April 1917–March 1918 https://archive.org/details/dli.ernet.29517/mode/2up (accessed 25/1/2024).
3. Lloyd George, D. 1934. War Memoirs of David Lloyd George III. London: Ivor Nicholson, p. 1302.
4. Ministry of Agriculture, Fisheries and Food, Department of Agriculture. 1986. A Century of Agricultural Statistics: Great Britain 1866–1966. London: HMSO, p. 70.
5. Ministry of Agriculture, Fisheries and Food. Department of Agriculture and Fisheries for Scotland. 1968. op. cit. pp. 54–5.