(en) Jon Ledford, «10 Best Trading Card Games», sur arcadesushi.com (consulté le ) : «Yu-Gi-Oh!, Digimon, and Pokémon may have each declined in popularity over the past decade [...]».
(en) Brian Camp et Julie Davis, Anime Classics Zettai!: 100 Must-See Japanese Animation Masterpieces, , 408p. (lire en ligne), p.103-108.
(en) Joseph Jay Tobin, Pikachu's Global Adventure: the Rise and Fall of Pokémon, Duke University Press, , 299p. (ISBN978-0822332879, lire en ligne), p.190.
(en) Takako Aoyama et Tomoko Akashita, Anime Poster Art: Japan's Movie House Masterpieces, Cocoro Books (lire en ligne), p.76, Digimon quickly established its own international fanbase.
Pedro Vázquez-Miraz, «Sexismo en “Digimon”: quince años de inmovilismo = Sexism in “Digimon”: Fifteen years of stagnation», FEMERIS: Revista Multidisciplinar de Estudios de Género, vol.2, no1, , p.67 (ISSN2530-2442, DOI10.20318/femeris.2017.3549, lire en ligne).
Pedro Vázquez-Miraz, «Sexismo en “Digimon”: quince años de inmovilismo = Sexism in “Digimon”: Fifteen years of stagnation», FEMERIS: Revista Multidisciplinar de Estudios de Género, vol.2, no1, , p.67 (ISSN2530-2442, DOI10.20318/femeris.2017.3549, lire en ligne).
(es) Rosa Rivas, «La serie 'Digimon' llega a Fox Kids», El País, (ISSN1134-6582, lire en ligne, consulté le )
(en-US) Jim Rutenberg, «Violence Finds a Niche in Children's Cartoons», The New York Times, (ISSN0362-4331, lire en ligne)
«INTERVIEW: Jeff Nimoy» (consulté le ) : «All the names came from Toei Animation and Bandai Toys. [...]. On a rare occasion, they would ask for suggestions on an English character name.».
«Bandai consolide ses marques emblématiques et joue la carte des licences à succès issues des plateformes Internet.», La Revue du Jouet, no555, , p.39 (lire en ligne[PDF])
(en-US) «Q/R avec l'adaptateur Jeff Nimoy (2006)», sur With the Will (consulté le ) : «All those things came directly from Bandai to match whatever info they were putting out on the trading cards. Why they chose it, I don't know, I just had to stay consistent with them.».
(en-US) «Q/R avec l'adaptateur Jeff Nimoy (2006)», sur With the Will (consulté le ) : «Toei Animation knew they would eventually incorporate kids from all over the world, so the decision was to leave it Japan, and ignore the fact that they all sound like they're from the midwest.».