The Hillier manual of trees & shrubs.

MLA

The Hillier Manual of Trees & Shrubs. 6th ed. Newton Abbot: David and Charles, 1996.

APA

(1996). The Hillier manual of trees & shrubs. 6th ed. Newton Abbot: David and Charles.

Chicago

The Hillier Manual of Trees & Shrubs. 6th ed. Newton Abbot: David and Charles, 1996.