Abidin, Zainal. “Marketing Efficiency of Economically Important Marine Fish in Malang Regency of East Java, Indonesia”. International Review of Management and Marketing 8, no. 3 (May 6, 2018): 14–18. Accessed January 26, 2025. https://mail.econjournals.org.tr/index.php/irmm/article/view/6161.