APA (7th ed.) Citation

Gilman, E. F., & Lilly, S. J. (2002). Tree pruning. International Society of Arboriculture.

Chicago Style (17th ed.) Citation

Gilman, Edward F., and Sharon J. Lilly. Tree Pruning. Champaign,Il: International Society of Arboriculture, 2002.

MLA (9th ed.) Citation

Gilman, Edward F., and Sharon J. Lilly. Tree Pruning. International Society of Arboriculture, 2002.

Warning: These citations may not always be 100% accurate.