Cita APA

Harlow, W. M. (1959). Fruit key and twig key to trees and shrubs. Dover.

Citación estilo Chicago

Harlow, William M. Fruit Key and Twig Key to Trees and Shrubs. New York, USA: Dover, 1959.

Cita MLA

Harlow, William M. Fruit Key and Twig Key to Trees and Shrubs. Dover, 1959.