Torrance, Richard (2005). „Literacy and Literature in Osaka, 1890-1940”. The Journal of Japanese Studies. Society for Japanese Studies (31): 56. „Sarutobi Sasuke precipitated a "ninja boom" among the young throughout the country. Sarutobi is an adolescent superhero who, in addition to his ability to chant incantations, appear and disappear at will, and leap to the top of the highest tree, can hear whispered conversations hundreds of yards away, is superhumanly strong, can ride on clouds, is able to conjure water, fire and wind as well as transform himself into other people and animals.”
Burke, Liam (2008). Superhero Movies. Harpenden, UK: Oldcastle Books. ISBN978-1842432754. „If Superman can be credited with the creation of the superhero archetype, then Batman should be recognised for its refinement.”
