Lindström, A. J., Calonje, M., Stevenson, D., Husby, C. and Taylor, A. (2013) “Clarification of Zamia acuminata and a new Zamia species from Coclé Province, Panama”, Phytotaxa. Auckland, New Zealand, 98(2), pp. 27–42. doi: 10.11646/phytotaxa.98.2.1.