Jones & Anderson 1990. Helminths of rodents and marsupials from Papua New Guinea, with the description of two new species, Echinostoma echymiperae n. sp. (Digenea: Echinostomatidae) and Vampirolepis peroryctis n. sp. (Cestoda: Hymenolepididae). Systematic Parasitology, 15(3) 1990: 223-237