- Oast and hop kilns, a history (online resource)
- Reynolde Scot, ‘A perfite platforme of a hoppe garden’, London 1576
- (2016) 51. Hop (Humulus lupulus) – a bitter crop with sweet prospects, Biodiversity, 17:3, 115-127
- G. G. THOMAS, W. W. SCHWABE, Factors Controlling Flowering in the Hop (Humulus lupulus L.), Annals of Botany, Volume 33, Issue 4, September 1969, Pages 781–793
- E. J. Lance, The Hop Farmer, pub. Ridgway & Sons, London 1838
- Edwards, Will, et al. “The Global Trend in Plant Twining Direction.” Global Ecology and Biogeography, vol. 16, no. 6, 2007, pp. 795–800
- Hops, The penny magazine of the Society for the Diffusion of Useful Knowledge, vol IV, pub. Charles Knight, London 1835
See full list of Individual Species References.
Please also refer to the General Bibliography and Online Resources.