Weldon, W. F. R. (1889). Haplodiscus piger, a new pelagic organism from the Bahamas. Q J Microsc Sci New Ser, 29:1-8[details]
Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2024). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Haplodiscus piger Weldon, 1888. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://marinespecies.org/traits./aphia.php?p=taxdetails&id=379955 on 2024-05-02
Marine Species Traits editorial board (2024). Marine Species Traits. Haplodiscus piger Weldon, 1888. Accessed at: https://marinespecies.org/traits./aphia.php?p=taxdetails&id=379955 on 2024-05-02