M. R. Devi, S. A. Rasid, and J. Alma’ruf, “EFFECT OF SAFE AND HALAL COSMETICS EDUCATION ON STUDENTS’ KNOWLEDGE: A QUASI-EXPERIMENTAL STUDY AT SMK KESEHATAN BAKTI INDONESIA MEDIKA PONOROGO”, JPK, vol. 15, no. 1, pp. 10–20, Jun. 2026.