NIU, Kefeng. Historical Distribution of François’ Langurs (Trachypithecus francoisi) in Guangdong, China: Implications for Their Conservation. LangTaoSha Preprint Server, 2025. DOI: 10.65215/4rjc2p12. Disponível em: https://langtaosha.org.cn/index.php/lts/preprint/view/47. Acesso em: 26 dec. 2025.