ⓘ Notes on Fees: The APC (Rp 420.000) is only charged after the manuscript is officially accepted for publication. No payment is required at any stage prior to acceptance, including during submission and peer review. Letter of Acceptance (LoA) and Publication Certificate are provided free of charge to all accepted authors. Two optional add-on services are available upon request: (1) Printed hard copy of the published article with postal delivery — Rp 500.000; and (2) Correspondence document package, a complete set of editorial correspondence records commonly required for institutional or accreditation purposes — Rp 500.000. These services are entirely optional and authors who only require digital publication are not subject to any additional fee. All fees are disclosed transparently to ensure authors are fully informed before making any payment.