PURJAYANTI, A. Stimulating positive English speaking class environment. JLT: Jurnal Linguistik Terapan, [S. l.], v. 2, n. 2, p. 32–41, 2012. Disponível em: https://jurnal.polinema.ac.id/index.php/jlt/article/view/250. Acesso em: 29 dec. 2025.