PRASTYO, H. Tata Bahasa Inggris: Jilid Pertama. Penerbit PT INTENSE Mojokerto Bintang Sembilan, [S. l.], 2017. Disponível em: https://ejournal.intense-mojokerto.com/index.php/penerbit/article/view/1. Acesso em: 6 mar. 2026.