N. J. Rombe, W. C. Rotinsulu, and S. E. Pakasi, “SPATIAL MAPPING OF COCONUT (Cocos nucifera L.) PLANTATIONS IN SANGKUB DISTRICT, NORTH BOLAANG MONGONDOW REGENCY USING GEOGRAPHIC INFORMATION SYSTEMS”, JAT, vol. 2, no. 2, pp. 70–79, Nov. 2021.