Barokah SM, Matangaran JR, santosa G. Cost Analysis of Felling with Chainsaw and Skidding with Farm Tractor in KPH Saradan. IJSBAR. 2017;33(1):89-102. Accessed December 15, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/7205