Global Geoparks Network, Arts & Humanities Research Council (Great Britain), Walker Barker, D., Davidson, P., & Rawson-Tetley, C. (2006). In search of a hidden landscape: Artworks a Killhope, the North of England Lead Mining Museum, Upper Weardale, County Durham. David Walker Barker.
Cita Chicago Style (17a ed.)Global Geoparks Network, Arts & Humanities Research Council (Great Britain), David Walker Barker, Peter Davidson, y Chris Rawson-Tetley. In Search of a Hidden Landscape: Artworks a Killhope, the North of England Lead Mining Museum, Upper Weardale, County Durham. London: David Walker Barker, 2006.
Cita MLA (8a ed.)Global Geoparks Network, et al. In Search of a Hidden Landscape: Artworks a Killhope, the North of England Lead Mining Museum, Upper Weardale, County Durham. David Walker Barker, 2006.