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Kasper, A. E.; Andrews, H. N. (1972). "Pertica, a New Genus of Devonian Plants from Northern Maine". American Journal of Botany. 59 (9): 897–911. doi:10.2307/2441116. JSTOR2441116.
(placement in Euphyllophytina) Kenrick, Paul & Crane, Peter R. (1997), The Origin and Early Diversification of Land Plants: A Cladistic Study, Washington, D.C.: Smithsonian Institution Press, ISBN978-1-56098-730-7
Parent's taxonomic references:
Kenrick, Paul & Crane, Peter R. (1997), The Origin and Early Diversification of Land Plants: A Cladistic Study, Washington, D.C.: Smithsonian Institution Press, ISBN978-1-56098-730-7