APA (7th ed.) Citation

Koppka, J. Crawlers on the Seabed – The Famous Devonian Trilobites of Gerolstein. OICC Press.

Chicago Style (17th ed.) Citation

Koppka, Jens. Crawlers on the Seabed – The Famous Devonian Trilobites of Gerolstein. OICC Press.

MLA (9th ed.) Citation

Koppka, Jens. Crawlers on the Seabed – The Famous Devonian Trilobites of Gerolstein. OICC Press.

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