For Sorbus
Aldasoro, J.J., C. Aedo, F.M. Garmendia, F. Pando de la Hoz, and C. Navarro. 2004. Revision of Sorbus subgenera Aria and Torminaria (Rosaceae-Maloideae). Systematic Botany Monographs 69: 1-148.
Jones, G.N. 1939. A synopsis of the North American species of Sorbus. J. Arnold Arb. 20: 1-43.
Kalkman In Kubitzki, K., ed. 2004. The families and genera of vascular plants. VI. Flowering plants – Dicotyledons – Celastrales, Oxalidales, Rosales, Cornales, Ericales. Springer, Berlin. 489 pp.
McAllister, H. 2005. The genus Sorbus: mountain ash and other rowans. Royal Botanic gardens, Kew. 252 pp.
Zika, P.F., and S.M. Bailleul. 2014. Sorbus. In Flora of North America Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9, Magnoliophyta: Picramniaceae to Rosaceae. Oxford Univ. Press, New York, NY. 713 pp.
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