《藍玫瑰》（最相葉月\/岩波現代文庫）
《玫瑰大圖鑒》（上田善弘、河合伸誌監修\/NHK出版）
Yukihisa Katsumoto et al., “Engineering of the Rose Flavonoid Biosynthetic Pathway Successfully Generated Blue-Hued Flowers Accumulating Delphinidin”, Plant Cell Physiol., 48(11), 1589-1600 (2007).
Kumi Yoshida et al., “Blue Flower Color Development by Anthocyanins: from Chemical Structure to Cell Physiology”, Nat. Prod. Rep., 26(7), 884-915 (2009).