Drury, H. B. (1923). Labour shifts in continuous industries in the United States. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Drury, Horace B. Labour Shifts in Continuous Industries in the United States. International Labour Organization, 1923.
Citatione MLA (9a ed.)Drury, Horace B. Labour Shifts in Continuous Industries in the United States. International Labour Organization, 1923.
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