Purnomo, Heri, et al. “Strategy of Derivatives Hedging: Maintaining and Increasing Firm Value Amidst Market Volatility in Indonesia: Evidence from Indonesian”. Shafin: Sharia Finance and Accounting Journal, vol. 4, no. 2, Nov. 2024, pp. 66-84, doi:10.19105/sfj.v4i2.15502.