● Smibert RM, Johnson JL, Ranney RR (1984). Treponema socranskii sp. nov., Treponema socranskii subsp. socranskii subsp. nov., Treponema socranskii subsp. buccale subsp. nov., and Treponema socranskii subsp. paredis subsp. nov. isolated from human periodontia. Int. J. Syst. Bacteriol. 34, 457-462.
