“Kajian Produktivitas Perikanan Tuna Cakalang Tongkol yang Tertangkap dengan Kapal Pukat Cincin (purse seine) 20 – 30 GT di Pelabuhan Perikanan Samudera Bitung (Productivity of Tuna, Skipjack, Tuna Frigate Catched by Purse Seiner 20 - 30 GT Landed in Bitung Oceanic Fishing Port)” (2018) Journal of Capture Fisheries Science and Technology, 3(1). doi:10.35800/jitpt.3.1.2018.18909.