PANDAY, S.; KUMAR, V.; DASH, S. S.; SINHA, B. K.; SINGH, P. Bhutan Asiabell Codonopsis bhutanica Ludlow (Asterales: campanulaceae): a new addition to the Indian flora. Journal of Threatened Taxa, [S. l.], v. 11, n. 15, p. 15079–15082, 2019. DOI: 10.11609/jott.4708.11.15.15079-15082. Disponível em: https://threatenedtaxa.org/index.php/JoTT/article/view/4708. Acesso em: 27 sep. 2021.