Fotos: (1,2) Natural History Museum, London: HOLOTYPE de Parabalea balnearum (Crawford, 1939), NHMUK 1939.4.17.1-9, Tambo-Machay, Cuzco, Peru, 23.vi.1937
Fontes:
Descrição original:(como Nenia (Neniatracta) balnearum Crawford, 1939)Crawford, G. I. (1939). Report on the terrestrial Mollusca collected by the Percy Sladen Expedition to Lake Titicaca, 1937. Proceedings of the Malacological Society of London. 23(6): 318–332., disponível online em https://doi.org/10.1093/oxfordjournals.mollus.a064373
página(s): 321, pl. 19, fig. 13
Nordsieck, H. (2007). Worldwide Door Snails (Clausiliidae), Recent and Fossil. ConchBooks, Hackenheim, 214 pp.
página(s): 40