| Author | Title | Journal/publisher | Literature ref. no. |
| Degreef, J., De Block, P., & Robbrecht, E. (2002) | A survey of continental African Coptosperma (Rubiaceae, Pavetteae). | Syst. Geogr. Pl. 71 367-382 | 192 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.
| No species found |