Bergey DH, Harrison FC, Breed RS, Hammer BW, Huntoon FM. Bergey's Manual of Determinative Bacteriology, 1st ed. The Williams & Wilkins Co, Baltimore, 1923.
Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.
Haemophilus ducreyi has for long been recognized to be only distantly related to the type species of the genus Haemophilus. The Subcommittee on the taxonomy of Pasteurellaceae proposed to conduct a collaborative taxonomic investigation with the aim of proposing a new genus that would include Haemophilus ducreyi.Publication:
Christensen H, Kuhnert P. International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of Pasteurellaceae: minutes of the meetings, 25 August 2011, Elsinore, Denmark. Int J Syst Evol Microbiol 2012; 62:257-258.