Borrell, Assumpción, and Alex Aguilar. “A Review of Organochlorine and Metal Pollutants in Marine Mammals from Central and South America”. J. Cetacean Res. Manage. (January 1, 1999): 195–207. Accessed December 5, 2023. https://journal.iwc.int/index.php/jcrm/article/view/258.