Hossfeld, Britta. “Distribution and Biomass of Arrow Worms (Chaetognatha) in Golfo De Nicoya and Golfo Dulce, Costa Rica”. Revista de Biología Tropical 44, no. S3 (December 1, 1996): 157–172. Accessed October 19, 2024. https://revistas.ucr.ac.cr/index.php/rbt/article/view/29562.