APA

(1970). Proceedings of the Commonwealth Mining and Metallurgical Congress. London: The Institution of Mining and Metallurgy.

Chicago

1970. Proceedings of the Commonwealth Mining and Metallurgical Congress. London: The Institution of Mining and Metallurgy.

Harvard

(1970). Proceedings of the Commonwealth Mining and Metallurgical Congress. London: The Institution of Mining and Metallurgy.

MLA

Proceedings of the Commonwealth Mining and Metallurgical Congress. London: The Institution of Mining and Metallurgy. 1970.