เครดิต : https://grist.org/article/you-will-not-be-able-to-stop-looking-at-this-penis-snake/

เครดิต : http://wafflesatnoon.com/is-the-penis-snake-real-or-a-hoax/

เครดิต : https://news.mongabay.com/2012/08/penis-snake-discovered-in-brazil-is-actually-a-rare-species-of-amphibian/

เครดิต : https://infoamazonia.org/en/2013/04/relative-of-the-penis-snake-discovered-in-south-america/#!/story=post-5767