Doyle, Chlarles Clay. “‘A NIGHTINGALE CANNOT SING IN A CAGE’ – OR CAN IT? A PROVERB AND ITS RELATED BELIEFS”. Proverbium - Yearbook 38, no. 1 (August 31, 2021): 47–56. Accessed April 25, 2024. https://naklada.ffos.hr/casopisi/index.php/proverbium/article/view/14.