The Transformation of PT Kereta Api Indonesia (KAI): Improve in Service, Human Resource, and Recruitment Systems from Past to Present: Transformasi PT. Kereta  Api  Indonesia (KAI) Peningkatan Layanan, SDM, Dan Sistem Rekrutmen Dari Dulu Hingga Sekarang. pssh 2026, 9 (1), 619-624. https://doi.org/10.21070/pfx9e373.