Cita APA (7a ed.)

Ashworth, W., & Pegg, M. (1986). The history of the British coal industry. Clarendon.

Cita Chicago Style (17a ed.)

Ashworth, William, y Mark Pegg. The History of the British Coal Industry. Oxford: Clarendon, 1986.

Cita MLA (9a ed.)

Ashworth, William, y Mark Pegg. The History of the British Coal Industry. Clarendon, 1986.