Dame Rohani Siahaan, Evy Maharani, and Sakti Hutabarat, “Persepsi Pekebun Swadaya terhadap Peremajaan Perkebunan Kelapa Sawit di Kabupaten Rokan Hulu: Perceptions of Independent Smallholders on the Rejuvenation of Oil Palm Plantations in Rokan Hulu District”, JT, vol. 14, no. 1, pp. 100–113, June 2023.