411 REFERENCE · Wikibooks
Flora of New York/apw-ref
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
P. F. Stevens (2001 onwards). Angiosperm Phylogeny Website. Version 12, July 2012.Usage:{{../apw-ref|rosales|Rhamnaceae}}rosales Rhamnaceae