For Citrus
Araújo, E.F. de, L.P. de Queiroz, and M.A. Machado. 2003. What is Citrus? Taxonomic implications from a study of cp-DNA evolution in the tribe Citreae (Rutaceae subfamily Aurantioideae). Organisms, Diversity & Evolution 3: 55-62. Google Scholar
Bayer, R.J., D.J. Mabberley, C. Morton, C,H, Miller, I.K. Sharma, B.E. Pfeil, S. Rich, R. Hitchcock, and S. Sykes. 2009. A molecular phylogeny of the orange subfamily (Rutaceae: Aurantoideae) using nine cpDNA sequences. Amer. J. Bot. 96: 668-685. Google Scholar
Brown, C.A. 1959. Vegetation of the Outer Banks of North Carolina. Louisiana State University Studies, Coastal Studies Series No. 4. La. State Univ. Press, Baton Rouge, LA. 179 pp. Google Scholar
Kubitzki, K., ed. 2011. The families and genera of vascular plants. X. Flowering plants – Eudicots – Sapindales, Cucurbitales, Myrtaceae. Springer, Berlin. 436 pp. Google Scholar
Mabberley, D.J. 1997. A classification for edible Citrus (Rutaceae). Telopea 7: 167-172. Google Scholar
Nesom, G.L. 2014a. Citrus trifoliata (Rutaceae): review of biology and distribution in the USA. Phytoneuron 2014-46: 1-14. Google Scholar
Pfeil, B.E., and M.D. Crisp. 2008. The age and biogeography of Citrus and the orange subfamily (Rutaceae: Aurantioideae) in Australasia and New Caledonia. Amer. J. Bot. 95: 1621-1631. Google Scholar