Gaya APA

Corral, M, D., Earle, J, L. (2009). Gold Mining: Formation and Resource Estimation, Economics and Environmental Impact . New York: Nova Science.

Gaya MLA

Corral, Melanie, D.., Earle, Jared, L.. "Gold Mining: Formation and Resource Estimation, Economics and Environmental Impact". New York: Nova Science, 2009. Text.