Hawksworth, D. L., & Bull, A. T. (2006). Marine, freshwater and wetlands biodiversity conservation. Springer.
Chicago Style aipamenaHawksworth, David L., and Alan T. Bull. Marine, Freshwater and Wetlands Biodiversity Conservation. Dordrecht: Springer, 2006.
MLA aipamenaHawksworth, David L., and Alan T. Bull. Marine, Freshwater and Wetlands Biodiversity Conservation. Springer, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.