N. B. Sitorus, F. Indra, and S. Maleachi, “Training on Selecting Environmentally Friendly Packaging with a Green Tourism Concept for MSME Actors in Denai Lama Tourist Village, Deli Serdang”, kjpkm, vol. 4, no. 2, pp. 99–105, Oct. 2025, doi: 10.56347/kjpkm.v4i2.348.