Kinsey, J. M. and Denison, Jennifer. Backcountry Basics Colorado Springs, CO: Western Horseman Publishing, 2008. ISBN 978-0-911647-84-6. Chapter 3: "Making the Trail Horse"
J.J.BagleyA History of Lancashire(Phillimore & Co, London & Chichester) 1976, chapter 20 Andrew Bibby South Pennines and the Bronte Moors (Frances, Lincoln) 2005, p88. See also Gladys Sellers Walking in the South Pennines (Cicerone Press, Milnthorpe) 1991, p25
Herbert C Collins,The Roof of Lancashire (Dent & Sons, London) 1950, p99
Herbert C. Collins, above, chapters 6 and 9. Keith Parry Trans-Pennine Heritage: Hills, People and Transport (David & Charles, Newton Abbot, London & North Pomfret, Vermont) 1981, chapter 3
Sue Hogg Marsden & Delph to Howarth & Oxenhope-Bridleway Rides in the South Pennines (Pennine Packhorse Trails Trust, Todmorden) 1998
Both Collins, at p. 81, and Parry at p. 31, above, quote in full the Long Causeway jingle, which starts Brunley (Burnley) for ready money
Cresswell, Julia (2010). Oxford Dictionary of Word Origins. OUP Oxford. p. 39. ISBN 0-19-954793-9.
