For Cardiospermum
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.
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