For Hudsonia
Arrington & Kubitzki In Kubitzki, K., and C. Bayer, eds. 2003. The families and genera of vascular plants. V. Flowering plants – Dicotyledons – Malvales, Capparales, and non-betalain Caryophyllales. Springer, Berlin. 418 pp.
Biver, W., J.R. Abbott, R. Naczi, K. Gulledge, D.B. Poindexter, and K. Neubig. 2016. Phylogenetic relationships of Hudsonia (Cistaceae): a North American endemic genus. Poster, ASPT, 2016
Guzman, B., and P. Vargas. 2009. Historical biogeography and character evolution of Cistaceae (Malvales) based on analysis of plastid rbcL and trnL-trnF sequences. Organisms, Diversity & Evolution 9: 83-99.
Morse, L.E. 1979. Systematics and ecological biogeography of the genus Hudsonia (Cistaceae), the sand heathers. Ph.D. dissertation, Harvard University.
Skog, J.T., and N.H. Nickerson. 1972. Variation and speciation in the genus Hudsonia. Ann. Mo. Bot. Gard. 59: 454-464.
Strother, J.L. 2015d. Hudsonia. In Flora of North America Editorial Committee. 2015. Flora of North America north of Mexico. Volume 6, Magnoliophyta: Cucurbitaceae to Droseraceae. Oxford Univ. Press, New York, NY. 468 pp.