LALAENG, C. An Analysis of Costs and Returns and Production Efficiency of Economic Crops in South of Thailand. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, [S. l.], v. 36, n. 4, p. 1–17, 2019. Disponível em: https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/188031. Acesso em: 20 sep. 2026.