British Standards Institution. (1980). Methods for analysis and testing of coal and coke. British Standards Institution.
Citação do estilo Chicago (17ª ed.)British Standards Institution. Methods for Analysis and Testing of Coal and Coke. London: British Standards Institution, 1980.
Citação MLA (8ª ed.)British Standards Institution. Methods for Analysis and Testing of Coal and Coke. British Standards Institution, 1980.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.