Punt, Andre E., and Paul R. Wade. “Population Status of the Eastern North Pacific Stock of Gray Whales in 2009”. J. Cetacean Res. Manage. 12, no. 1 (February 9, 2023): 15–28. Accessed September 28, 2025. https://journal-iwc-live.netxtra.dev/index.php/jcrm/article/view/587.