Zonneveld, B. J. M.; Duncan, G. D. (2003). "Taxonomic implications of genome size and pollen colour and vitality for species of Agapanthus L'Heritier (Agapanthaceae)". Plant Systematics and Evolution. 241 (1–2): 115–123. Bibcode:2003PSyEv.241..115Z. doi:10.1007/s00606-003-0038-6. S2CID26017209.
Zonneveld, B. J. M.; Duncan, G. D. (2003). "Taxonomic implications of genome size and pollen colour and vitality for species of Agapanthus L'Heritier (Agapanthaceae)". Plant Systematics and Evolution. 241 (1–2): 115–123. Bibcode:2003PSyEv.241..115Z. doi:10.1007/s00606-003-0038-6. S2CID26017209.
Zonneveld, B. J. M.; Duncan, G. D. (2003). "Taxonomic implications of genome size and pollen colour and vitality for species of Agapanthus L'Heritier (Agapanthaceae)". Plant Systematics and Evolution. 241 (1–2): 115–123. Bibcode:2003PSyEv.241..115Z. doi:10.1007/s00606-003-0038-6. S2CID26017209.