1. ADAS (1976) Kirton EHS annual report 1974, Part 1, Bulbs
2. ADAS (1982a) Bulbs summary reports. Rosewarne and Isles of Scilly EHSs annual review 1981, pp 29–32
3. ADAS (1982b) Bulbs and allied flower crops 1981. Research and development reports, Agriculture Service. Reference Book 232 (81). Ministry of Agriculture, Fisheries and Food (MAFF), London
4. ADAS (1983) Bulbs and allied flower crops 1982a. Research and development reports, Agriculture Service. Reference Book 232 (82). MAFF (Publications), Alnwick
5. ADAS (1984) Bulb and corm production, 5th edn. Reference book 62. Her Majesty’s Stationary Office (HMSO), London