(EN) Deb Aoki, 50 Essential Manga for Libraries, su About.com, p. 3. URL consultato il 4 novembre 2020 (archiviato dall'url originale il 14 ottobre 2012).
«Gorgeously Goth and sumptuously drawn with just a dash of wicked dark humor, Black Butler is a fan favorite that consistently appears in the New York Times Graphic Books Manga Top 10 bestseller lists.»