APA (7th ed.) Citation

Klein, J. (2007). Lower Cretaceous ammonites. Backhuys.

Chicago Style (17th ed.) Citation

Klein, Jaap. Lower Cretaceous Ammonites. Leiden: Backhuys, 2007.

MLA (9th ed.) Citation

Klein, Jaap. Lower Cretaceous Ammonites. Backhuys, 2007.

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