Merrill, C. W., Henderson, C. W., & Kiessling, O. E. (1937). Small-scale placer mines as a source of gold, employment, and livelihood in 1935. Works Progress Administration, National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques.
Style de citation Chicago (17e éd.)Merrill, Charles W., Charles W. Henderson, et O. E. Kiessling. Small-scale Placer Mines as a Source of Gold, Employment, and Livelihood in 1935. Philadelphia: Works Progress Administration, National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques, 1937.
Style de citation MLA (8e éd.)Merrill, Charles W., et al. Small-scale Placer Mines as a Source of Gold, Employment, and Livelihood in 1935. Works Progress Administration, National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques, 1937.