Calonje, M., Morales, G., López-Gallego, C. and Roldán, F. J. (2015) “A taxonomic revision of Zamia montana and Zamia oligodonta, with notes on their conservation status”, Phytotaxa. Auckland, New Zealand, 192(4), pp. 279–289. doi: 10.11646/phytotaxa.192.4.5.