↑Goffinet, Bernard; William R. Buck (2004). «Systematics of the Bryophyta (Mosses): From molecules to a revised classification». Monographs in Systematic Botany. Molecular Systematics of Bryophytes. ISBN1-930723-38-5.Texto « Botanical Garden Press » ignorado (ayuda)
↑Buck, William R. & Bernard Goffinet. (2000). "Morphology and classification of mosses", pages 71-123 in A. Jonathan Shaw & Bernard Goffinet (Eds.), Bryophyte Biology. (Cambridge: Cambridge University Press). ISBN0-521-66097-1.
Shaw, A. Jonathan, 2000. "Phylogeny of the Sphagnopsida Based on Chloroplast and Nuclear DNA Sequences" [1], The Bryologist103 (2): 277-306.