Reference:Mackenzie1920a
Verbatim text: Mackenzie, K. K. 1920. Scientific names applicable to our purple-flowered eupatoriums. Rhodora 22: 157–165.
Author: Mackenzie, K.K.
Year: 1920
Title: Scientific names applicable to our purple-flowered eupatoriums
Journal: Rhodora
Volume: 22
Pages: 157–165