Yulita, I., M. Djamil, and I. MM, Ak. “The Performance of Forestry Extension Functional Officials in the Ministry of Environment and Forestry”. Jurnal Manajemen (Edisi Elektronik), vol. 7, no. 2, Dec. 2016, pp. 107-21, doi:10.32832/jm-uika.v7i2.1108.