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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)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.