APA (7th ed.) Citation

Weinberg В. Р. Boris Petrovich. (1921). The secular variation of terrestrial magnetism in Siberia. 1921.

Chicago Style (17th ed.) Citation

Weinberg В. Р. Boris Petrovich. The Secular Variation of Terrestrial Magnetism in Siberia. 1921, 1921.

MLA (9th ed.) Citation

Weinberg В. Р. Boris Petrovich. The Secular Variation of Terrestrial Magnetism in Siberia. 1921, 1921.

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