APA

Harris H., . (1939). American labor. New Haven, Yale university press; London, H. Milford, Oxford university press: .

Chicago

Harris Herbert, . 1939. American labor. New Haven, Yale university press; London, H. Milford, Oxford university press: .

Harvard

Harris H., . (1939). American labor. New Haven, Yale university press; London, H. Milford, Oxford university press: .

MLA

Harris Herbert, . American labor. New Haven, Yale university press; London, H. Milford, Oxford university press: . 1939.