References
For Cunninghamia
Farjon, A. 1998. World checklist and bibliography of conifers. Royal Botanic Gardens, Kew, England. Google Scholar
Page. 1990. In Kramer, K.U., and P.S. Green. 1990. Pteridophytes and Gymnosperms. In K. Kubitzki, ed., The families and genera of vascular plants. Springer-Verlag, Berlin. Google Scholar