Smith, R. National parks of Britain: Dartmoor, Exmoor, New Forest, The Broads, Peak District, Yorkshire Dales, North York Moors, Lake District, Northumberland, Pembrokeshire Coast, Brecon Beacons, Snowdonia, Loch Lomond and the Trossachs, Cairngorms.
Chicago-viite (17. p.)Smith, Roland. National Parks of Britain: Dartmoor, Exmoor, New Forest, The Broads, Peak District, Yorkshire Dales, North York Moors, Lake District, Northumberland, Pembrokeshire Coast, Brecon Beacons, Snowdonia, Loch Lomond and the Trossachs, Cairngorms. Basingstoke : Automobile Association, 2008.
MLA-viite (9. p.)Smith, Roland. National Parks of Britain: Dartmoor, Exmoor, New Forest, The Broads, Peak District, Yorkshire Dales, North York Moors, Lake District, Northumberland, Pembrokeshire Coast, Brecon Beacons, Snowdonia, Loch Lomond and the Trossachs, Cairngorms.