Weers, D.J. van. (2003) The porcupine Hystrix (Acanthion) brachyura punungensis subsp. nov. from Late Pleistocene fissure deposits near Punung, Java. Scripta Geologica, 126: 217-225 PDF
nus.edu.sg
rmbr.nus.edu.sg
Azlan J, M & Engkamat, L (2006) Camera trapping and conservation in Lambir Hills National Park, Sarawak. The Raffles Bulletin of Zoology54(2) pp. 469-475 PDF보관됨 2008-07-24 - 웨이백 머신
uva.nl
dpc.uba.uva.nl
van Weers, DJ (2005) A taxonomic revision of the Pleistocene Hystrix (Hystricidae, Rodentia) from Eurasia with notes on the evolution of the family. Contributions to Zoology, 74 (3/4) LINK
web.archive.org
Azlan J, M & Engkamat, L (2006) Camera trapping and conservation in Lambir Hills National Park, Sarawak. The Raffles Bulletin of Zoology54(2) pp. 469-475 PDF보관됨 2008-07-24 - 웨이백 머신