
Conk, M. A. (1978). Occupational classification in the United States census: 1870 - 1940. The journal of interdisciplinary history. - Massachusetts Institute of Technology, School of Humanities and Social Sciences. Ed. Robert I. Rotberg [u.a.].
Chicago Style (17th ed.) CitationConk, Margo Anderson. "Occupational Classification in the United States Census: 1870 - 1940." The Journal of Interdisciplinary History. - Massachusetts Institute of Technology, School of Humanities and Social Sciences. Ed. Robert I. Rotberg [u.a.] 1978.
MLA (8th ed.) CitationConk, Margo Anderson. "Occupational Classification in the United States Census: 1870 - 1940." The Journal of Interdisciplinary History. - Massachusetts Institute of Technology, School of Humanities and Social Sciences. Ed. Robert I. Rotberg [u.a.], 1978.