APA (7th ed.) Citation

(1890). Vol. 6, № 1-6; American Geologist. 1890.

Chicago Style (17th ed.) Citation

Vol. 6, № 1-6; American Geologist. 1890, 1890.

MLA (9th ed.) Citation

Vol. 6, № 1-6; American Geologist. 1890, 1890.

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