APA-viite (7. p.)

Barth, P. S. 1. (1987). The tragedy of black lung: Federal compensation for occupational disease. W.E. Upjohn Institute for Employment Research.

Chicago-viite (17. p.)

Barth, Peter S. 1937. The Tragedy of Black Lung: Federal Compensation for Occupational Disease. Kalamazoo, MI: W.E. Upjohn Institute for Employment Research, 1987.

MLA-viite (9. p.)

Barth, Peter S. 1937. The Tragedy of Black Lung: Federal Compensation for Occupational Disease. W.E. Upjohn Institute for Employment Research, 1987.

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