Transactions of the Royal Geological Society of Cornwall, Vol.6 p308 - 316
| On the Argentiferous Lead Mines of the Sierra Almgrera on the south-east coast of Spain, James Mitchell, VI: 308-315, 1846. |
| On the Argentiferous Lead Mines of the Sierra Almgrera on the south-east coast of Spain, James Mitchell, VI: 308-315, 1846. |