TYMR, F. Communication between Human and Gray Parrot. Lidé města, [S. l.], v. 6, n. 2/14, p. 177-191, 2004. DOI: 10.14712/12128112.4397. Disponível em: https://ojs.cuni.cz/lidemesta/article/view/4397. Acesso em: 20 may. 2024.