APA (7th ed.) Citation

De Geer, G. J. (1940). Geochronologia suecica principles. Almqvist & Wiksells.

Chicago Style (17th ed.) Citation

De Geer, Gerard Jakob. Geochronologia Suecica Principles. Stockholm: Almqvist & Wiksells, 1940.

MLA (8th ed.) Citation

De Geer, Gerard Jakob. Geochronologia Suecica Principles. Almqvist & Wiksells, 1940.

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