APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (8. izdanje)

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