Best, Peter B., Victor M. Peddemors, Victor G. Cockcroft, and Nan Rice. “Mortalities of Right Whales and Related Anthropogenic Factors in South African Waters, 1963-1998”. J. Cetacean Res. Manage. (October 30, 2020): 171–176. Accessed December 3, 2022. https://journal.iwc.int/index.php/jcrm/article/view/293.