1. ^¹ [https://www.nytimes.com/2011/11/09/books/the-great-big-book-of-horrible-things-by-matthew-white.html?_r=1&ref=arts Ranking History’s Atrocities by Counting the Corpses], New York Times, Nov 8, 2011.
2. ^{{Cite news|url=http://www.csmonitor.com/Books/chapter-and-verse/2012/0224/Encyclopedia-of-evil-a-catalog-of-history-s-100-worst-atrocities|title=Encyclopedia of evil: a catalog of history's 100 worst atrocities|date=2012-02-24|newspaper=Christian Science Monitor|issn=0882-7729|access-date=2016-08-14}}
3. ^{{Cite web|url=http://www.dailymail.co.uk/news/article-2147396/The-Great-Big-Book-Horrible-Things-Author-ranks-historys-worst-atrocities.html|title='The Great Big Book of Horrible Things': Author ranks history's worst atrocities... and warns more horrors could be on the way|last=|first=|date=|website=The Daily Mail|publisher=|access-date=2016-08-14}}
4. ^{{Cite web|url=https://www.kirkusreviews.com/book-reviews/matthew-white/great-big-book-horrible-things/|title=The Great Big Book of Horrible Things|last=|first=|date=7 November 2011|website=Kirkus Reviews|publisher=|access-date=}}
5. ^[https://www.amazon.com/The-Great-Book-Horrible-Things/dp/0393081923 The Great Big Book of Horrible Things: The Definitive Chronicle of History's 100 Worst Atrocities]
6. ^Italian translation
7. ^Portuguese translation
8. ^Romanian translation