Citazione Stile APA (7a Edizione)

Brush, W. D., Butcher , D., & Collingwood, G. (1974). Knowing your trees (Rev. ed.). The American Forestry Association.

Citazione stile Chigago Style (17a edizione)

Brush, Warren D., Devereux Butcher , e G.H Collingwood. Knowing Your Trees. Rev. ed. Washington, D.C.: The American Forestry Association, 1974.

Citatione MLA (9a ed.)

Brush, Warren D., et al. Knowing Your Trees. Rev. ed. The American Forestry Association, 1974.