Villegas-Zurita, Francisco, et al. “First Records of Balaenoptera Edeni (Cetartiodactyla: Balaenopteridae) in the Coast of Oaxaca, Mexico”. THERYA, vol. 7, no. 3, Sept. 2016, pp. 499-03, https://therya.mastozoologiamexicana.com/index.php/THERYA/article/view/396.