For Uvularia
Nordenstam In Kubitzki, K., ed. 1998a. The families and genera of vascular plants. III. Flowering plants – Monocotyledons – Lilianae (except Orchidaceae). Springer, Berlin. 478 pp.
Utech, F.H., and S. Kawano. 2002. Uvularia. In Flora of North America Editorial Committee. 2002a. Flora of North America north of Mexico. Volume 26, Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York, NY. 723 pp.
Uttal, L.J. 1991. Notes on Uvularia puberula Michaux (Liliaceae). Castanea 56: 70.
Wilbur, R.L. 1963b. A revision of the North American genus Uvularia. Rhodora 65: 158-188.