Parker, Charles Thomas; Garrity, George M. (2017). Parker, Charles Thomas; Garrity, George M (eds.). "Taxonomy of the species Angustibacter speluncae Ko and Lee 2017". doi:10.1601/tx.30657 (inactive 2024-04-17). {{cite journal}}: Cite journal requires |journal= (help)CS1 maint: DOI inactive as of April 2024 (link)