Template:Spooner et al., 2003
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- Spooner, D.M., Hetterscheid, W.L.A., van den Berg, R.G. & Brandenburg, W.A. 2003. Plant nomenclature and taxonomy: an horticultural and agronomic perspective. Horticultural Reviews 28: 1–60. ISBN 978-0-471-21542-4. DOI: 10.1002/9780470650851.ch1. PDF