Ariyanto, A., Y. Syaukat, S. Hartoyo, and B. M. Sinaga. “TECHNOLOGY ADOPTION AND TECHNICAL EFFICIENCY OF OIL PALM SMALLHOLDER PLANTATION IN RIAU AND WEST KALIMANTAN”. Jurnal Manajemen & Agribisnis, Vol. 17, no. 3, Nov. 2020, p. 239, doi:10.17358/jma.17.3.239.