Spencer, S. (1985). Police authorities during the miners' strike. The Cobden Trust.
Cita Chicago Style (17a ed.)Spencer, Sarah. Police Authorities During the Miners' Strike. London: The Cobden Trust, 1985.
Cita MLA (8a ed.)Spencer, Sarah. Police Authorities During the Miners' Strike. The Cobden Trust, 1985.
Precaución: Estas citas no son 100% exactas.