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Hoogland, R. D. (1960). "Studies in the Cunoniaceae. I. The genera Ceratopetalum, Gillbeea, Aistopetalum, and Calycomis". Australian Journal of Botany. 8 (3): 318–341. Bibcode:1960AuJB....8..318H. doi:10.1071/bt9600318.
Hopkins, H. C. F.; Rozefelds, A. C.; Pillon, Y. (18 Oct 2013). "Karrabina gen. nov. (Cunoniaceae), for the Australian species previously placed in Geissois, and a synopsis of genera in the tribe Geissoieae". Australian Systematic Botany. 26 (3): 167–185. Bibcode:2013AuSyB..26..167H. doi:10.1071/SB12037.
Hoogland, R. D. (1960). "Studies in the Cunoniaceae. I. The genera Ceratopetalum, Gillbeea, Aistopetalum, and Calycomis". Australian Journal of Botany. 8 (3): 318–341. Bibcode:1960AuJB....8..318H. doi:10.1071/bt9600318.
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