Coba jelasin Rujukan dari Phrynops hilarii dalam bahasa melayu dong

Boulenger, George Albert. 1889. Catalogue of the Chelonians, Rhynchocephalians, and Crocodiles in the British Museum (Natural History). New Edition. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). x + 311 pp. + Plates I-III. (Hydraspis hilarii: p. 220, figure 59, three views of skull; p. 221, figure 60, carapace and plastron; p. 222, species description).