Griffin, C. P. (1969). The economic and social development of the Leicestershire and South Derbyshire coalfied 1550-1914.
Chicago-viite (17. p.)Griffin, C. P. The Economic and Social Development of the Leicestershire and South Derbyshire Coalfied 1550-1914. 1969.
MLA-viite (8. p.)Griffin, C. P. The Economic and Social Development of the Leicestershire and South Derbyshire Coalfied 1550-1914. 1969.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.