Wright 1986, p. 67. Wright, Geoffrey Norman (1986). Roads and trackways of the Yorkshire Dales. London: Guild. OCLC819802502.
Wright 1986, p. 192. Wright, Geoffrey Norman (1986). Roads and trackways of the Yorkshire Dales. London: Guild. OCLC819802502.
Davis, James W (1880). West Yorkshire : an account of its geology, physical geography, climatology and botany (2 ed.). London: L Reeve & Co. pp. 109, 314. OCLC10727963.
Mitchinson, James, ed. (7 January 2016). "Major road shut after movement detected on hillside". The Yorkshire Post. p. 7. ISSN0963-1496.