Yang, Xue; Shu-Gang, Lu; Hua, Peng (2007-11). «First report of chromosome numbers of the Carlemanniaceae (Lamiales)». Journal of Plant Research (Springer Japan) 120 (6): 707-712. PMID17805478. doi:10.1007/s10265-007-0113-0.|fechaacceso= requiere |url= (ayuda)
Yang, Xue; Shu-Gang, Lu; Yi-Ping, Zhang; Hua, Peng (2007-12). «Factors acting on the distribution region of Carlemanniaceae: Rainfall, temperature and the plants’ biological characteristics». Chinese Science Bulletin (Science in China Press, co-published with Springer-Verlag) 52 (Supplement 2): 244-250. doi:10.1007/s11434-007-7017-1.|fechaacceso= requiere |url= (ayuda)