Yovi, E.Y. and Suryaningsih (2012) “Noise, Worker Perception, and Worker Concentration in Timber Harvesting Activity”, Jurnal Manajemen Hutan Tropika, 17(2), pp. 56–62. Available at: https://journal.ipb.ac.id/jmht/article/view/3975 (Accessed: 14 January 2026).