Delprete, Piero G. “Monograph of Tribe Sipaneeae (Rubiaceae, Ixoroideae). A Neotropical Group With Its Center of Diversity on the Guiana Shield”. Webbia 77, no. 1 (November 16, 2022): 1–284. Accessed April 25, 2024. https://oaj.fupress.net/index.php/webbia/article/view/13963.