APA (7th ed.) Citation

Settele, J., Penev, L., & Georgiev, T. (2010). Atlas of biodiversity risk. Pensoft.

Chicago Style (17th ed.) Citation

Settele, Josef, Lyubomir Penev, and Teodor Georgiev. Atlas of Biodiversity Risk. Sofia: Pensoft, 2010.

MLA (9th ed.) Citation

Settele, Josef, et al. Atlas of Biodiversity Risk. Pensoft, 2010.