OSMASTON, F. C. An Expedition into Sikkim. Indian Forester, [S. l.], v. 61, n. 7, p. 425–434, 1935. DOI: 10.36808/if/1935/v61i7/20846. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/20846. Acesso em: 29 oct. 2025.