For Malus
Dickson, E.E. 2014. Malus. 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.
Kalkman. 2004. 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.
Qian, Q.-Z., L.-F. Liu, and G.-G. Tang. 2010. (1933) Proposal to conserve the name Malus domestica against M. pumila, M. communis, M. frutescens, and Pyrus dioica (Rosaceae). Taxon 59: 650-652.
Robertson, K.R. 1974. The genera of Rosaceae in the southeastern United States. J. Arnold Arb. 55: 303-332, 344-401, 611-662.
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