1. Johnston, S.J. (1912) On some trematode parasites of Australian frogs. Proceedings of the Linnean Society of New South Wales, 37, 285–362.
2. Kiew, B.H. (1984) Conservation status of the Malaysian fauna. The Malayan Naturalist, (May), 6–10.
3. Ozaki, Y. (1935) Studies on the frog-trematode Diplorchis ranae. I. Morphology of the adult form with a review of the family Polystomatidae. Journal of Science, Hiroshima University, Series B Division 1, 3, 193–225.
4. Pichelin, S. (1995) Parapolystoma johnstoni n. sp. from Litoria nyakalensis (Amphibia) in Australia and taxonomic considerations on the Diplorchiinae (Monogenea). Journal of Parasitology, 81, 261–265.
5. Prudhoe, S. & Bray, R.A. (1982) Platyhelminth parasites of the Amphibia. London: British Museum (Natural History) and Oxford University Press, 217 pp.