《蓝玫瑰》（最相叶月/岩波现代文库）
《玫瑰大图鉴》（上田善弘、河合伸志监修/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).