Verbatim text: Dahlgren, R. M. T. 1980. A revised system of classification of the angiosperms. Bot. J. Linn. Soc. 80: 91-124.
Author: Dahlgren, R.M.T.
Year: 1980
Title: A revised system of classification of the angiosperms
Journal: Bot. J. Linn. Soc
Volume: 80
Pages: 91–124