Não informado. (1974). Transactions of the Institution of Mining and Metallurgy. Institution of Mining and Metallurgy.
Citação do estilo Chicago (17ª ed.)Não informado. Transactions of the Institution of Mining and Metallurgy. London: Institution of Mining and Metallurgy, 1974.
Citação MLA (8ª ed.)Não informado. Transactions of the Institution of Mining and Metallurgy. Institution of Mining and Metallurgy, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.