Crowson, P. (1992). Minerals handbook 1992-93: Statistics and analyses of the world's minerals industry (Sixth edition.). Reino Unido: MacMillan Publishers.
Citación estilo ChicagoCrowson, Phillip. Minerals Handbook 1992-93: Statistics and Analyses of the World's Minerals Industry. Sixth edition. Reino Unido: MacMillan Publishers, 1992.
Cita MLACrowson, Phillip. Minerals Handbook 1992-93: Statistics and Analyses of the World's Minerals Industry. Sixth edition. Reino Unido: MacMillan Publishers, 1992.
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