D. M.  Johnson and Murray, N. A., ?Four new species of Polyalthia (Annonaceae) from Borneo and their relationship to Polyalthia insignis?, Contributions from the University of Michigan HerbariumContributions from the University of Michigan Herbarium, vol. 22, pp. 95-104, 1999.

D. M.  Johnson, Murray, N. A., Murillo, J., and Maas, P. J. M., ?Annonaceae?, in Nuevo catálogo de la flora vascular de Venezuela, H.  Omaira, Berry, P. E., and Huber, O., Eds. Caracas: Fundación Instituto Botánico de Venezuela Dr. Tobias Lasser, 2008, pp. 197-201.