Cita APA (7a ed.)
Dirr, M. A., & Warren, K. S. The Tree Book: Superior Selections for Landscapes, Streetscapes, and Gardens. Timber.
Cita estilo Chicago (17a ed.)
Dirr, Michael A., y Keith S. Warren. The Tree Book: Superior Selections for Landscapes, Streetscapes, and Gardens. Portland, EUA: Timber.
Cita MLA (9a ed.)
Dirr, Michael A., y Keith S. Warren. The Tree Book: Superior Selections for Landscapes, Streetscapes, and Gardens. Timber.
Precaución: Estas citas no son 100% exactas.