For Ulmaceae
Sherman-Brotles, S.L., W.T. Barker, and L.M. Schultz. 1997. Ulmaceae. In Flora of North America Editorial Committee. 1997. Flora of North America north of Mexico. Volume 3, Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press, New York, NY. 590 pp. Google Scholar
Todzia. 1993. In Kubitzki, K., J.G. Rohwer, and V. Bittrich, eds. 1993. The families and genera of vascular plants. II. Flowering plants – Dicotyledons – Magnoliid, Hamamelid and Caryophyllid families. Springer, Berlin. 653 pp. Google Scholar
Zavada, M.S., and M. Kim. 1996. Phylogenetic analysis of Ulmaceae. Plant Syst. Evol. 200: 13-20. Google Scholar
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