Rantavo F1[alaline kõdulink], Vegetables and Melons, 22. jaanuar 2013, vaadatud 28.07.2015)(ing
lise keeles)
Redwing' F1[alaline kõdulink], Vegetables and Melons, 22. jaanuar 2013, vaadatud 28.07.2015)(inglise keeles)
researchgate.net
George F Antonious, Elizabeth Perkins, Austin H Cantor, Chicken manure increased concentration of organic sulfur compounds in field-grown onions., Department of Plant and Soil Science, Kentucky State University, Frankfort, Kentucky 40601, USA, Journal of Environmental Science and Health Part B Pesticides Food Contaminants and Agricultural Wastes (Impact Factor: 1.23). 06/2009; 44(5):481-7. DOI: 10.1080/03601230902935303, vaadatud 23.07.2015)(inglise keeles)
Agricultural Research Management Information System (ARMIS), Department of Horticulture Bangladesh Agricultural University. Mymensingh, A COMPARATIVE STUDY ON THE YIELD OF FOUR ONION CULTIVARS, vaadatud 1.08.2015)(inglise keeles)
Ministry of Agriculture & Fisheries, Agricultural Services Unit, Hope Gardens, Kingston 6, The "Versatility" of Onion, 30. september 2011, 1.7 väljaanne, vaadatud 1.08.2015)(inglise keeles)