^"会社概要". Jitsugyo no Nihon Sha. Archived from the original on October 28, 2008. Retrieved December 14, 2008.
^英語コミックス ジャングル大帝 [レオ編]. Jippi English Comics. Retrieved November 15, 2019.
^"Mighty Atom: Best Selection [Astro Boy, Tetsuwan Atomu; Jippi English Comics]: Powered By Atomic Energy, he Fights Evil in the 21st Century as a Hero to All". Abebooks. Retrieved November 15, 2019. , 英語コミックス 鉄腕アトム [ベストセレクション]. Jippi English Comics. Retrieved November 15, 2019.