Chanin P. (2003) Ecology of the European Otter. Conserving Natura 2000 Rivers Ecology Series No.10 English Nature, Peterborough.
Environment Agency (1999) Otters and River Habitat Management (2nd edition). Bristol.
Green R. & Green J. (1997) Otter Survey of Scotland: 1991-94. Vincent Wildlife Trust, London.
Grogan A., Philcox C. & Macdonald D. (2001) Nature Conservation and Roads: advice in relation to otters. Wildlife Conservation Research Unit/Highways Agency.
Highways Agency (1998) Design Manual for Roads and Bridges. Volume 10 Environmental Design: Section 1, Part 5.
Kruuk H. (1995) Wild Otters: Predation and Populations. Oxford University Press, Oxford.
Kruuk H. (2006) Otters: Ecology, Behaviour and Conservation. Oxford University Press, Oxford.
Liles G. (2003) Otter Breeding Sites. Conservation and Management. Conserving Natura 2000 Rivers Conservation Technical Series No.5 English Nature, Peterborough.
Environment Agency (1997) Ponds and Conservation: a guide to pond restoration, creation and management. Bristol.
Scottish Environment Protection Agency (2000) Ponds, pools and lochans. Guidance on good practice in the management and creation of small waterbodies in Scotland.
The Scottish Office Development Department (1999) National Planning Policy Guideline NPPG 14 Natural Heritage.
Strachan, R. (2007) National survey of otter Lutra lutra distribution in Scotland 2003-2004. Scottish Natural Heritage Commissioned Report No.211 (ROAME No. F03AC309).