APA citiranje

Leathart, G. L. (1973). Digest of Pneumoconiosis Statistics 1971. Department of Trade and Industry.

Citação norma Chicago

Leathart, G. L. Digest of Pneumoconiosis Statistics 1971. Department of Trade and Industry. 1973.

MLA citiranje

Leathart, G. L. Digest of Pneumoconiosis Statistics 1971. Department of Trade and Industry. 1973.

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