Cita APA (7th ed.)

Knobel, E. (1972). Identify trees and shrubs by their leaves: A guide to trees and shrubs native to the northeast. Dover.

Cita Chicago (17th ed.)

Knobel, Edward. Identify Trees and Shrubs by Their Leaves: A Guide to Trees and Shrubs Native to the Northeast. Nueva York: Dover, 1972.

Cita MLA (9th ed.)

Knobel, Edward. Identify Trees and Shrubs by Their Leaves: A Guide to Trees and Shrubs Native to the Northeast. Dover, 1972.