(Ingelesez)Schuettpelz, Eric; Rouhan, Germinal; Pryer, Kathleen M.; Rothfels, Carl J.; Prado, Jefferson; Sundue, Michael A.; Windham, Michael D.; Moran, Robbin C. et al.. (2018-06-01). «Are there too many fern genera?»Taxon 67 (3): 473–480. doi:10.12705/673.1. ISSN0040-0262. (Noiz kontsultatua: 2021-10-29).
(Ingelesez)Schuettpelz, Eric; Rouhan, Germinal; Pryer, Kathleen M.; Rothfels, Carl J.; Prado, Jefferson; Sundue, Michael A.; Windham, Michael D.; Moran, Robbin C. et al.. (2018-06-01). «Are there too many fern genera?»Taxon 67 (3): 473–480. doi:10.12705/673.1. ISSN0040-0262. (Noiz kontsultatua: 2021-10-29).
(Ingelesez)Schuettpelz, Eric; Rouhan, Germinal; Pryer, Kathleen M.; Rothfels, Carl J.; Prado, Jefferson; Sundue, Michael A.; Windham, Michael D.; Moran, Robbin C. et al.. (2018-06-01). «Are there too many fern genera?»Taxon 67 (3): 473–480. doi:10.12705/673.1. ISSN0040-0262. (Noiz kontsultatua: 2021-10-29).