Earle, Christopher J., (Ed.) (2017). "Sequoia sempervirens". The Gymnosperm Database. 1 Nisan 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 15 Eylül 2017.
Lewis, L.A.; McCourt, R.M. (2004). "Green algae and the origin of land plants". American Journal of Botany. 91 (10): 1535-1556. doi:10.3732/ajb.91.10.1535. PMID21652308.
Adl, S.M. (2005). "The new higher level classification of eukaryotes with emphasis on the taxonomy of protists". The Journal of Eukaryotic Microbiology. 52 (5): 399-451. doi:10.1111/j.1550-7408.2005.00053.x. PMID16248873.
Taylor, Thomas N. (November 1988). "The Origin of Land Plants: Some Answers, More Questions". Taxon. 37 (4): 805-833. doi:10.2307/1222087. JSTOR1222087.
Taylor, Thomas N. (November 1988). "The Origin of Land Plants: Some Answers, More Questions". Taxon. 37 (4): 805-833. doi:10.2307/1222087. JSTOR1222087.
Lewis, L.A.; McCourt, R.M. (2004). "Green algae and the origin of land plants". American Journal of Botany. 91 (10): 1535-1556. doi:10.3732/ajb.91.10.1535. PMID21652308.
Adl, S.M. (2005). "The new higher level classification of eukaryotes with emphasis on the taxonomy of protists". The Journal of Eukaryotic Microbiology. 52 (5): 399-451. doi:10.1111/j.1550-7408.2005.00053.x. PMID16248873.
Earle, Christopher J., (Ed.) (2017). "Sequoia sempervirens". The Gymnosperm Database. 1 Nisan 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 15 Eylül 2017.