Providencia friedericiana Müller 1983 Müller H.E. Providencia friedericiana, a new species isolated from penguins 1983 33 4 709 715 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-33-4-709 Note: Verified that there is no sequence data available (May 1, 2018).