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Sánchez-Lafuente, A.M.; F. Valera; A. Godino; F. Muela (2001). "Natural and human-mediated factors in the recovery and subsequent expansion of the Purple swamphen Porphyrio porphyrio L. (Rallidae) in the Iberian Peninsula". Biodiversity & Conservation. 10 (6): 851–867. doi:10.1023/A:1016690317236. S2CID12196978.
Samraoui, F.; Nedjah, R.; Alfarhan, A.H.; Samraoui, B. (2015). "An overview of the Rallidae of Algeria with particular reference to the breeding ecology of the Purple Swamp-Hen Porphyrio porphyrio". Wetlands Ecolology and Management. 23 (3): 505–517. doi:10.1007/s11273-014-9404-0. S2CID255104439.