Verbatim text: Dress, W. J. 1966. Notes on the cultivated Compositae 9. Onopordum. Baileya 14: 74–86.
Author: Dress, W.J.
Year: 1966
Title: Notes on the cultivated Compositae 9. Onopordum
Journal: Baileya
Volume: 14
Pages: 74–86