EFLY, Two. “S. PARMAN 102 A” 25 Tahun Perjalanan Bisnis Harian Pagi Padang Ekspres. GAES - PACE Book Publisher, [S. l.], 2024. Disponível em: https://www.digitalpress.gaes-edu.com/index.php/gaespace/article/view/256. Acesso em: 14 oct. 2026.