Hillier's manual of trees and shrubs.
MLA
Hillier's Manual of Trees and Shrubs. 4th ed. London: David and Charles, 1977.
APA
(1977). Hillier's manual of trees and shrubs. 4th ed. London: David and Charles.
Chicago
Hillier's Manual of Trees and Shrubs. 4th ed. London: David and Charles, 1977.