GAVIN, Adrienne E. Dark Horse: A Life of Anna Sewell. [s.l.]: Sutton 276 s. Dostupné online. ISBN978-0-7509-2838-0. (anglicky) Google-Books-ID: yCxqQgAACAAJ.
npr.org
NORRIS, Michele. How 'Black Beauty' Changed The Way We See Horses. National Public Radio [online]. 2012-11-02 [cit. 2023-03-23]. Dostupné online.