Sukmiwati M, Leksono T, Fionasari D. Implementation of CPPB-IRT in Fish Smoking Groups Using Liquid Smoke in Langgam Village, Pelalawan, Riau. engagement [Internet]. 2025May10 [cited 2025Nov.17];9(1):216 -227. Available from: http://engagement.fkdp.or.id/index.php/engagement/article/view/1995