http://cbc.amnh.org/center/pubs/pdfs/4-GCPReport2HerpetofaunaAppendix.pdf
http://i4vn.com.vn/forum/thu-cung/85217-cach-cham-va-nuoi-rua-post661834.html
http://www.yeumoitruong.com/home/index.php?option=com_content&view=article&id=1057:-nha-rua-vn-cuc-phng&catid=37:bo-tn-thien-nhien&Itemid=272