Ohio State Nematode Report, April 2016

“Bulb scale mites and narcissus,” Central Science Lab, Sand Hutton, York, 2003, England

“Stem Eelworm on Narcissus,” UK Ministry of Agriculture, Fisheries, and Food, 1976

Narcissus Pests, Bulletin 51, Ministry of Agriculture, Fisheries and Food, 1970

“Insect and Mite Pests of Narcissus,” E.P. Breakey; Herbertia, Vol. 13, 1946

“The State of Health of Daffodils in the Netherlands,” Dr. van Slogteren, Laboratorium von Bloembollenonderzoek te Lisse, December 1936

“Further Investigations on the Eelworm Disease of Narcissus,” lecture by Mr. J.K. Ramsbottom delivered before the Royal Horticultural Society and Horticultural Club, April 13, 1920; The Gardeners Chronicle, April 24 and May 1, 1920