APA (7th ed.) Citation

(1863). T. 20 (1862-1863); Bulletin de la Societe Geologique de France. 1863.

Chicago Style (17th ed.) Citation

T. 20 (1862-1863); Bulletin De La Societe Geologique De France. 1863, 1863.

MLA (9th ed.) Citation

T. 20 (1862-1863); Bulletin De La Societe Geologique De France. 1863, 1863.

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