Pounds, N. J. G., & Parker, W. N. (1957). Coal and steel in Western Europe: The influence of resources and techniques on production. Faber.
Lua i Stíl Chicago (17ú heag.)Pounds, Norman J. G., agus William N. Parker. Coal and Steel in Western Europe: The Influence of Resources and Techniques on Production. London: Faber, 1957.
Lua MLA (8ú heag.)Pounds, Norman J. G., agus William N. Parker. Coal and Steel in Western Europe: The Influence of Resources and Techniques on Production. Faber, 1957.
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