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.
Chicago Style (17th ed.) CitationMerrill, Charles W., Charles W. Henderson, and 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.
MLA引文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.