MLA

den Ouden, Alex. A Proposal for an International Documentation of Remains of the Steel Industry. London: Historical metallurgy society, 1981.

APA

den Ouden, A. (1981). A proposal for an international documentation of remains of the steel industry. London: Historical metallurgy society.

Chicago

den Ouden, Alex A Proposal for an International Documentation of Remains of the Steel Industry.. London: Historical metallurgy society, 1981.