«Died.». Time, 17-06-1985 [Consulta: 20 juliol 2008]. «John Ringling North, 81, flamboyant, fast-talking showman who from 1937 to 1943 and from 1947 to 1967 ran "The Greatest Show on Earth," the Ringling Bros. and Barnum & Bailey Circus, started by his five uncles in 1884; of a stroke; in Brussels. North took over the debt-spangled show after the death of his last uncle, John Ringling, and modernized it with such attractions as Gargantua the Great, the "vehemently vicious" 550-lb. gorilla that drew more than 40 million circusgoers. In 1956, North folded the big top and reincarnated the show for new arenas of the air-conditioned era.»Arxivat 2008-12-11 a Wayback Machine. «Còpia arxivada». Arxivat de l'original el 2008-12-11. [Consulta: 11 març 2019].
«Died.». Time, 17-06-1985 [Consulta: 20 juliol 2008]. «John Ringling North, 81, flamboyant, fast-talking showman who from 1937 to 1943 and from 1947 to 1967 ran "The Greatest Show on Earth," the Ringling Bros. and Barnum & Bailey Circus, started by his five uncles in 1884; of a stroke; in Brussels. North took over the debt-spangled show after the death of his last uncle, John Ringling, and modernized it with such attractions as Gargantua the Great, the "vehemently vicious" 550-lb. gorilla that drew more than 40 million circusgoers. In 1956, North folded the big top and reincarnated the show for new arenas of the air-conditioned era.»Arxivat 2008-12-11 a Wayback Machine. «Còpia arxivada». Arxivat de l'original el 2008-12-11. [Consulta: 11 març 2019].