Tên Khác: Saving with Numbers! A Small and Weak Nation;
- 数字で救う! 弱小国家　電卓で戦争する方法を求めよ。ただし敵は剣と火薬で武装しているものとする。;
- 数字で救う！弱小国家

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Manga 

1. https://otakusan.net/MangaDetail/24682/suuji_de_sukuu_jyakkushou_kokka
2. https://loveheaven.net/manga-suuji-de-sukuu-jyakushou-kokka-manga-raw.html
3. https://mangakakalot.com/manga/jd920967
4. http://mangadex.today/manga/suuji-de-sukuu-jyakkushou-kokka