Croft, J.; Cross, N.; Hinchcliffe, S.; Lughadha, E. Nic; Stevens, P. F.; West, J. G.; Whitbread, G. (May 1999). "Plant Names for the 21st Century: The International Plant Names Index, a Distributed Data Source of General Accessibility". Taxon. 48 (2): 317–324. doi:10.2307/1224436. ISSN0040-0262. JSTOR1224436.
Croft, J.; Cross, N.; Hinchcliffe, S.; Lughadha, E. Nic; Stevens, P. F.; West, J. G.; Whitbread, G. (May 1999). "Plant Names for the 21st Century: The International Plant Names Index, a Distributed Data Source of General Accessibility". Taxon. 48 (2): 317–324. doi:10.2307/1224436. ISSN0040-0262. JSTOR1224436.
Croft, J.; Cross, N.; Hinchcliffe, S.; Lughadha, E. Nic; Stevens, P. F.; West, J. G.; Whitbread, G. (May 1999). "Plant Names for the 21st Century: The International Plant Names Index, a Distributed Data Source of General Accessibility". Taxon. 48 (2): 317–324. doi:10.2307/1224436. ISSN0040-0262. JSTOR1224436.