Alexander, S. N., Hoffman, B., Kelloff, C. L., & Funk, V. A. (2014). Smithsonian plant collections, the Guianas 1991-1993 and 1995-2000, Bruce Hoffman. Smithsonian Institution Scholarly Press.

Alexander, Sara N., Bruce Hoffman, Carol L. Kelloff, and V. A. Funk. Smithsonian Plant Collections, the Guianas 1991-1993 and 1995-2000, Bruce Hoffman. Washington, D.C.: Smithsonian Institution Scholarly Press, 2014.

Alexander, Sara N., et al. Smithsonian Plant Collections, the Guianas 1991-1993 and 1995-2000, Bruce Hoffman. Smithsonian Institution Scholarly Press, 2014.