PENDRY, C. A.; ADEMA, F. Polygala obliqua Pendry, a new species of Polygalaceae from northern Thailand. Thai Forest Bulletin (Botany), [S. l.], n. 41, p. 41–44, 2014. Disponível em: https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24099. Acesso em: 20 aug. 2022.