Classification System: APG III (down to family level)
- Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 12, July 2012. 
- Govaerts, R. & al. (2014) Sphaerosepalaceae in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2014 July 25. As iPlants Prototype.