Hyam, R., Drinkwater, R.E. and Harris, D.J. 2012.

Stable citations for herbarium specimens on the internet: an illustration from a taxonomic revision of Duboscia (Malvaceae)

. Phytotaxa. 73, 1 (Nov. 2012), 17–30. DOI:https://doi.org/10.11646/phytotaxa.73.1.4.