Arthur Conan Doyle (2014). “The Complete Sherlock Holmes (Illustrated): All 4 Novels and 56 Stories with More Than 480 Illustrations”, p.126, Top Five Books LLC
"‘Sherlock’ Creators and Benedict Cumberbatch on “Myopically Dark” Season 4 and the Series’ Future". Interview with Christina Radish, collider.com. August 2, 2016.
"‘Sherlock’ Creators and Benedict Cumberbatch on “Myopically Dark” Season 4 and the Series’ Future". Interview with Christina Radish, collider.com. August 2, 2016.