Gilman, E.F. and Black, R.J. 2005. Pruning landscape trees and shrubs.
Excellent reference from leaders in the urban forest tree management. Many other references available at Dr. Gilman's site. http://hort.ifas.ufl.edu/people/gillman_pic.shtml.
Circular 853 (MG087), http://edis.ifas.ufl.edu/pdffiles/MG/MG08700.pdf.
GilmanBlackUFLPruningTrees and Shrubs.pdf — PDF document, 509 kB (521626 bytes)