1. Aldridge D. 1975. Guide to Countryside Interpretation, Part One: Principle of Countryside Interpretation and Interpretive Planning. HMSO/Countryside Commission for Scotland/Countryside Commission, London.
2. Baird J. C. 1994. Naked rock and the fear of exposure. In: O'halloran D. , Green C. , Harley M. , Stanley M. & Knill J. (eds) Geological and Landscape Conservation. Geological Society, London, 335–336.
3. Barton H. A. 1998. Northern Arcadia: Foreign Travelers in Scandinavia, 1765–1815. Southern Illinois University Press, Carbondale.
4. Beazley E. 1971. The Countryside on View: A Handbook on Countryside Centres, Field Museums, and Historic Buildings Open to the Public: Their Planning & Some Display Techniques. Constable, London.