Castañeda Rojas, A., Franco Martínez, I. S., & García-Mendoza, A. (2005). Manfreda galvaniae (Agavaceae), a new species from Mexico, with notes on the taxonomic placement of M. malinaltenangensis Matuda and its lectotipification. Instituto de Ecología, A.C.
Lua i Stíl Chicago (17ú heag.)Castañeda Rojas, Alejandro, I. Sonia Franco Martínez, agus Abisaí García-Mendoza. Manfreda Galvaniae (Agavaceae), a New Species from Mexico, with Notes on the Taxonomic Placement of M. Malinaltenangensis Matuda and Its Lectotipification. Instituto de Ecología, A.C, 2005.
Lua MLA (9ú heag.)Castañeda Rojas, Alejandro, et al. Manfreda Galvaniae (Agavaceae), a New Species from Mexico, with Notes on the Taxonomic Placement of M. Malinaltenangensis Matuda and Its Lectotipification. Instituto de Ecología, A.C, 2005.
