F. A. Fernando, D. Maswadi, and W. Fitrianti, “Assessing Farmer Knowledge and the Effectiveness of ISPO Certification Support in Sintang Regency”, J. AGRISEP: Kaj. Mas. Sos. Ek. Pert. n. Agr., vol. 25, no. 01, pp. 29–44, Mar. 2026.