References   BergeyBergey's Manual of systematics of archaea and bacteria, 2001-2017.
; CABCommonwealth agricultural bureaux International, CAB Thesaurus
; DBUNPMar Nicolosi, Vito - Nicoletti, Giuseppe, Dizionario di batteriologia umana, normale e patologica, 4. ed., rist., Salerno, Momento medico, 2007.
(voce: Helicobacter); ITISITIS Integrated Taxonomicon Information System [partners:] USDA, NOA, USGS, Smithsonian Institution... [et al.], 2016-.
; MESH(IT)Istituto superiore di sanità, Medical subject headings 2019 [traduzione italiana]
; NALTUSDA <United States department of agriculture> - National agricultural library - Inter-American institute for cooperation on agriculture, National Agricultural Library Thesaurus Concept Space
; TaxThe Taxonomicon & Sistema Naturae 2000, editor S.J. Brands
; 
Wikipedia(IT)Wikipedia. L'enciclopedia libera, 2001 [ed. in lingua italiana dell' enciclopedia online Wikipedia]
(voce: Helicobacter pylori)