Puc-Carrasco, Gissel, Benjamín Morales-Vela, León David Olivera-Gomez, and David González-Solís. “First Field-Based Estimate of Antillean Manatee Abundance in the San Pedro River System Suggests Large Errors in Current Estimates for Mexico”. Ciencias Marinas 43, no. 4 (December 22, 2017): 285–299. Accessed May 1, 2024. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2704.