Puspitasari NA, Purwanta, Hapsari ED. The Relationship Between Knowledge And Teachers’ Perception Of Smoke-Free Area (KTR) In Its Implementation In State Junior High School Of Sleman District . J. Nurs. Manag. Innov. [Internet]. 2026 May 6 [cited 2026 Jun. 17];2(1):20-7. Available from: https://journal.gomit.id/jnmi/article/view/68