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Isao Taniguchi; Hajime Asō (June 2017). 図解入門業界研究最新アニメ業界の動向とカラクリがよ〜くわかる本 [Introductory Illustrated Industry Research A book that gives a good understanding of the latest trends and karakuri in the animation industry] (in Japanese) (2nd ed.). Japan: 秀和システム (Shuwa System). p. 75. ISBN978-4-7980-5038-6.{{cite book}}: CS1 maint: date and year (link)