Cita APA (7th ed.)

British Standards Institution. (1977). Methods for sampling of coal and coke. British Standards Institution.

Cita Chicago (17th ed.)

British Standards Institution. Methods for Sampling of Coal and Coke. London: British Standards Institution, 1977.

Cita MLA (8th ed.)

British Standards Institution. Methods for Sampling of Coal and Coke. British Standards Institution, 1977.