The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- C.Michael Hogan. 2011. Cactus. Ed. A.Dawson. Ed-in-chief C.J.Cleveland. Encyclopedia of Earth. National Council for Science and the Environment. Washington DC. http://www.eoearth.org/article/Cactus?topic=49480
- Hayward, B.; Gross, O. (2015). Stetsonia. In: Hayward, B.W., Cedhagen, T., Kaminski, M., Gross, O. (2015) World Foraminifera Database. Accessed through: World Register of Marine Species at http://marinespecies.org/aphia.php?p=taxdetails&id=112118
- The Cactaceae; descriptions and illustrations of plants of the cactus family 2: 64, f. 95–96, t. 9. 1920. (9 Sep 1920) (Cactaceae)
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