Segraves, Kari A.; Althoff, David M.; Pellmyr, Olle (1 de octubre de 2008). «The evolutionary ecology of cheating: does superficial oviposition facilitate the evolution of a cheater yucca moth?». Ecological Entomology33 (6): 765-770. S2CID55871573. doi:10.1111/j.1365-2311.2008.01031.x.
Segraves, Kari A.; Althoff, David M.; Pellmyr, Olle (1 de octubre de 2008). «The evolutionary ecology of cheating: does superficial oviposition facilitate the evolution of a cheater yucca moth?». Ecological Entomology33 (6): 765-770. S2CID55871573. doi:10.1111/j.1365-2311.2008.01031.x.
stparchive.com
hfp.stparchive.com
Winslow, Chris (18 de enero de 2012). «Yuccas: 'Ghosts in the Graveyard'». Hays Free Press (Hays County, Texas) (Vol. 109, No. 41) (Hays County, Texas: Barton Publications, Inc). p. 1C. Archivado desde el original el 25 de agosto de 2017. Consultado el 5 de febrero de 2015. «Another more evocative name for them is 'ghosts in the graveyard.' This comes from the high number of yuccas growing wild in forgotten graveyards, where their large white flower clusters appear as 'ghosts' in the moonlight.»
theplantlist.org
«Yucca». The Plant List(en inglés). Consultado el 19 de febrero de 2021.
Winslow, Chris (18 de enero de 2012). «Yuccas: 'Ghosts in the Graveyard'». Hays Free Press (Hays County, Texas) (Vol. 109, No. 41) (Hays County, Texas: Barton Publications, Inc). p. 1C. Archivado desde el original el 25 de agosto de 2017. Consultado el 5 de febrero de 2015. «Another more evocative name for them is 'ghosts in the graveyard.' This comes from the high number of yuccas growing wild in forgotten graveyards, where their large white flower clusters appear as 'ghosts' in the moonlight.»