Yang, Xue; Shu-Gang Lu, and Hua Peng «First report of chromosome numbers of the Carlemanniaceae (Lamiales)». Journal of Plant Research. Springer Japan, 120, 6, 11-2007, pàg. 707-712. DOI: 10.1007/s10265-007-0113-0 [Consulta: 27 desembre 2008].
Yang, Xue; Shu-Gang Lu, Yi-Ping Zhang, and Hua Peng «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, 12-2007, pàg. 244-250. DOI: 10.1007/s11434-007-7017-1 [Consulta: 27 desembre 2008].
