Copyright and citation

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This work may be cited as follows:
Stucky, J.M. and A. Krings. 2012-present. Winter twig keys to common, fully deciduous trees and phanerophyte shrubs of the North Carolina eastern Piedmont: A mobile resource, v. 1.1. Herbarium, Department of Plant and Microbial Biology, North Carolina State University. [http://herbarium.ncsu.edu/TwigID/; accessed (DATE HERE)]