TandraH., SurosoA. I., SyaukatY., and NajibM. “Indonesian Oil Palm Export Market Share and Competitiveness to European Union Countries: Is The Roundtable on Sustainable Palm Oil (RSPO) Influential?”. Jurnal Manajemen & Agribisnis, Vol. 18, no. 3, Nov. 2021, p. 342, doi:10.17358/jma.18.3.342.