Template:Van der Walt et al., 1995
- van der Walt, J.J.A., Albers, F., Gibby, M., Marschewski, D.E. & Price, R.A. 1995. A biosystematic study of Pelargonium section Ligularia: 1. A new section Subsucculentia. South African Journal of Botany 61(6): 331–338. DOI: 10.1016/S0254-6299(15)30555-X
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