Reference:Roberts2004a
Verbatim text: Roberts, R. P. and L. E. Urbatsch. 2004. Molecular phylogeny of Chrysothamnus (Asteraceae, Astereae) based on nuclear ribosomal 3' ETS and ITS sequence data. Syst. Bot. 29: 199–215.
Author: Roberts, R.P., Urbatsch, L.E.
Year: 2004
Title: Molecular phylogeny of Chrysothamnus (Asteraceae, Astereae) based on nuclear ribosomal 3' ETS and ITS sequence data
Journal: Syst. Bot
Volume: 29
Pages: 199–215