MM. Vilmorin-Andrieux; W.Robinson. 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
books.google.com
Davidson, Alan, and Tom Jaine. The Oxford companion to food. Oxford University Press, USA, 2006. 805. Print. Retrieved Aug. 09, 2010, from [1]