APA (7th ed.) Citation

David and Charles. (1993). The Hillier manual of trees and shrubs (6th ed.). David and Charles.

Chicago Style (17th ed.) Citation

David and Charles. The Hillier Manual of Trees and Shrubs. 6th ed. London: David and Charles, 1993.

MLA (8th ed.) Citation

David and Charles. The Hillier Manual of Trees and Shrubs. 6th ed. David and Charles, 1993.

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