Усов М. А. (1940). The main geochemical epochs of West Siberia. 1940.
Chicago Style (17th ed.) CitationУсов М. А. The Main Geochemical Epochs of West Siberia. 1940, 1940.
MLA (9th ed.) CitationУсов М. А. The Main Geochemical Epochs of West Siberia. 1940, 1940.
Warning: These citations may not always be 100% accurate.