Coal Mining in North Staffordshire. Staffordshire Past Track. Staffordshire County Council, Keele University, Staffordshire Learning Net. [20 May 2007]. (原始内容存档于31 May 2007).
Coal Mining in North Staffordshire. Staffordshire Past Track. Staffordshire County Council, Keele University, Staffordshire Learning Net. [20 May 2007]. (原始内容存档于31 May 2007).