“Analysis of Carapas Width and Weight on Maturity Level of Swimming Crab (Portunus Pelagicus) As Basis for Sustainable Resource Management in the Eastern Waters of Surabaya”. FishTaxa - Journal of Fish Taxonomy, vol. 27, Mar. 2023, pp. 57-64, http://fishtaxa.com/index.php/FishTaxa/article/view/30.