Linton, Linton Morebattle Hownam Yetholm Parish Church of Scotland. Retrieved 9 May 2014
wikisource.org
en.wikisource.org
William Henderson, (1879) "Chapter 8 - Worms or Dragons."Notes on the folk-lore of the northern counties of England and the borders. London: W. Satchell, Peyton, & Co. 1879.