Alexander Damian Parizaca, Melissa Díaz-Morales and Franco Pupulin. 2019. A New Species of Phragmipedium (Orchidaceae: Cypripedioideae) from Peru. Phytotaxa. 423(4) ; DOI: 10.11646/phytotaxa.423.4.4
Albert, V.Z. & B.Pettersson, Expansion of Genus Paphiopedilum Pfitzer to Include All Conduplicate-leaved Slipper Orchids (Cypripedioideae: Orchidaceae). Lindleyana 9(2) 133-139 (1994).
Braem, G. J., Ohlund, S., and Quene, R. J. 2004. The real Phragmipedium warszewiczianum: a clarification of the Phragmipedium caudatum complex (Phragmipedium section Phragmipedium). Orquideologia 23(2): 87-136
Pridgeon, A.M.; Cribb, P.J.; Chase, M.W. & F. N. Rasmussen (1999): Genera Orchidacearum Vol.1, Oxford U. Press. ISBN 0-19-850513-2