Perrin, W.F.; Würsig, B.; Thewissen, J.G.M. (2009). Encyclopedia of marine mammals. Second edition. Academic Press: London. ISBN 978-0-12-373553-9. xxix, 1316 pp. (look up in IMIS) [details]
A 190 ton female was reported taken off South Georgia in 1947; however, body weights of adults generally range from 50 to 150 tons. For maximum size descriptions, female measurements are used because female baleen whales are larger than males.