Smith, D. M. N. (1980). Taxonomic studies in Pachycarpus (Ascelpiadaceae) in Southern Africa.
Cita Chicago Style (17a ed.)Smith, Dianne Mary Noelle. Taxonomic Studies in Pachycarpus (Ascelpiadaceae) in Southern Africa. 1980.
Cita MLA (8a ed.)Smith, Dianne Mary Noelle. Taxonomic Studies in Pachycarpus (Ascelpiadaceae) in Southern Africa. 1980.
Precaución: Estas citas no son 100% exactas.