Cumming, J. (2012). Mining explained: A Layperson's guide (11a. ed.). The Northern Miner.
Cita Chicago Style (17a ed.)Cumming, John. Mining Explained: A Layperson's Guide. 11a. ed. Toronto: The Northern Miner, 2012.
Cita MLA (9a ed.)Cumming, John. Mining Explained: A Layperson's Guide. 11a. ed. The Northern Miner, 2012.
Precaución: Estas citas no son 100% exactas.