Verbatim text: Culley, T. M. and N. A. Hardiman. 2007. The beginning of a new invasive plant: A history of the ornamental Callery pear in the United States. BioScience 57: 956–964.
Author: Culley, T.M., Hardiman, N.A.
Year: 2007
Title: The beginning of a new invasive plant: A history of the ornamental Callery pear in the United States
Journal: BioScience
Volume: 57
Pages: 956–964