Satria, B. “LEGAL CERTAINTY FOR HEALTH FACILITIES IN PROVIDING REFERRAL LETTER ON PATIENT REQUESTS IN THE JKN ERA (JURIDICAL REVIEW OF THE SJSN LAW AND BPJS HEALTH LAW)”. International Journal of Educational Review, Law And Social Sciences (IJERLAS), vol. 2, no. 1, Jan. 2022, pp. 143-54, doi:10.54443/ijerlas.v2i1.160.