● Shah HN,Collins MD (1988). Proposal for reclassification of Bacteroides asaccharolyticus, Bacteroides gingivalis, and Bacteroides endodontalis in a new genus, Porphyromonas. Int. J. Syst. Bacteriol. 38, 128-131.
● Coykendall AL,Kaczmarek FS,Slots J (1980). Genetic Heterogeneity in Bacteroides asaccharoZyticus(Holdeman and Moore 1970) Finegold and Barnes 1977 (Approved Lists, 1980) and Proposal of Bacterozdes gingiualis sp. nov. and Bacteroides macacae (Slots and Genco) comb. nov. Int. J. Syst. Bacteriol. 30, 559-564.