Não informado. (1964). Coal Mining and Processing. Maclean Hunter.
Style de citation Chicago (17e éd.)Não informado. Coal Mining and Processing. Chicago, Ill: Maclean Hunter, 1964.
Style de citation MLA (8e éd.)Não informado. Coal Mining and Processing. Maclean Hunter, 1964.
Attention : ces citations peuvent ne pas être correctes à 100%.