GAYUS AFIANSYAH; RIYADI NUGROHO. PENGARUH KEPUASAN KERJA, LINGKUNGAN KERJA DAN SEMANGAT KERJA TERHADAP KINERJA KARYAWAN PT TRAC (ASTRA RENT A CAR ) SURABAYA. Jurnal Nirta : Studi Inovasi, [S. l.], v. 5, n. 2, p. 01–09, 2026. DOI: 10.61412/jnsi.v5i2.353. Disponível em: https://ejournal.nlc-education.or.id/index.php/JNSI/article/view/353. Acesso em: 3 feb. 2026.