Vilmorin-Andrieux, M. & Robinson, W. (1885/undated). The vegetable garden: Illustrations, descriptions, and culture of the garden vegetables of cold and temperate climates. English Edition. Jeavons-Leler Press and Ten Speed Press. 1920 edition in Internet Archive
Pignone, Domenico; Sonnante, Gabriella (2004). "Wild artichokes of south Italy: did the story begin here?". Genetic Resources and Crop Evolution. 51 (6): 577–580. doi:10.1023/B:GRES.0000024786.01004.71. S2CID23558636.
"AGM Plants – Ornamental"(PDF). Royal Horticultural Society. July 2017. p. 22. Retrieved 24 January 2018.
semanticscholar.org
api.semanticscholar.org
Pignone, Domenico; Sonnante, Gabriella (2004). "Wild artichokes of south Italy: did the story begin here?". Genetic Resources and Crop Evolution. 51 (6): 577–580. doi:10.1023/B:GRES.0000024786.01004.71. S2CID23558636.