^Pilsbry H. A. (2 February) 1895 Guide to the study of helices. Manual of conchology; structural and systematic. With illustrations of the species. Second series: Pulmonata. Volume 9. 36, 33a:i-xlviii, 161-336, plates 41-71. (Sagdinae is on page xxxii.)
^Wade, Christopher M.; Mordan, Peter B.; Naggs, Fred (2006). "Evolutionary relationships among the Pulmonate land snails and slugs (Pulmonata, Stylommatophora)". Biological Journal of the Linnean Society. 87 (4): 593–610. doi:10.1111/j.1095-8312.2006.00596.x.
^Goodfriend, Glenn A. (1986). "Radiation of the land snail genus Sagda (Pulmonata: Sagdidae): comparative morphology, biogeography and ecology of the species of north-central Jamaica". Zoological Journal of the Linnean Society. 87 (4): 367–398. doi:10.1111/j.1096-3642.1986.tb01341.x.
^Sagdidae. Discover Life, accessed 6 December 2008.