^Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp.
ISBN978-1-4214-0135-5. (Sphaerodactylus underwoodi, p. 270).
Further reading
Rösler H (2000). "Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha)". Gekkota2: 28–153. (Sphaerodactylus underwoodi, p. 114). (in German).
Schwartz A (1968). "The Geckos (Sphaerodactylus) of the Southern Bahama Islands". The Annals of the Carnegie Museum39: 227–271. (Sphaerodactylus underwoodi, new species, p. 250).
Schwartz A,
Henderson RW (1991). Amphibians and Reptiles of the West Indies: Descriptions, Distributions, and Natural History. Gainesville, Florida: University of Florida Press. 720 pp.
ISBN978-0813010496. (Sphaerodactylus underwoodi, p. 543).
Schwartz A,
Thomas R (1975). A Check-list of West Indian Amphibians and Reptiles.
Carnegie Museum of Natural History Special Publication No. 1. Pittsburgh, Pennsylvania: Carnegie Museum of Natural History. 216 pp. (Sphaerodactylus underwoodi, p. 163).