APA (7th ed.) Citation

Groot, G. E. d. (1963). Rugose corals from the Carboniferous of northern Palencia (Spain). Druk van J.J. Groen.

Chicago Style (17th ed.) Citation

Groot, G. E. de. Rugose Corals from the Carboniferous of Northern Palencia (Spain). Leiden: Druk van J.J. Groen, 1963.

MLA (8th ed.) Citation

Groot, G. E. de. Rugose Corals from the Carboniferous of Northern Palencia (Spain). Druk van J.J. Groen, 1963.