The Pteridophyte Phylogeny Group (November 2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603.
Parent's taxonomic references:
PPG I (2016)၊ "A community-derived classification for extant lycophytes and ferns"၊ Journal of Systematics and Evolution၊ 54 (6): 563–603၊ doi:10.1111/jse.12229