APA (7th ed.) Citation

Усов М. А. (1940). The main geochemical epochs of West Siberia. 1940.

Chicago Style (17th ed.) Citation

Усов М. А. The Main Geochemical Epochs of West Siberia. 1940, 1940.

MLA (9th ed.) Citation

Усов М. А. The Main Geochemical Epochs of West Siberia. 1940, 1940.

Warning: These citations may not always be 100% accurate.