For Sapindus
Acevedo-Rodríguez, van Welzen, Adema, and van der Ham. 2011. Sapindaceae. In Kubitzki, K., ed. 2011. The families and genera of vascular plants. X. Flowering plants – Eudicots – Sapindales, Cucurbitales, Myrtaceae. Springer, Berlin. 436 pp.
Brizicky, G.K. 1963. The genera of Sapindales in the southeastern United States. J. Arnold Arb. 44: 462-501.
McNair, D.M. and C. Andresen. 2020. Soapberry (Sapindus L.) in Arizona. Phytoneuron 2020-78: 1-23. Published 18 November 2020. ISSN 2153 733X
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