H. N. Nasution, A. Zainy, R. M. Lubis, T. Hidayat, S. W. R. Nasution, and R. Fauzi, “Training on Environmental Poster Design Based on Physics Data by Vocational High School Students as Agents of Change”, J-IbM, vol. 5, no. 1, pp. 84–92, Aug. 2025.