Cita APA

Viereck, L. A., & Little, E. L. 1. (1972). Alaska trees and shrubs. Washington: Forest Service US, Departamento of Agriculture.

Citación estilo Chicago

Viereck, Leslie A., y Elbert Luther 1907-2004 Little. Alaska Trees and Shrubs. Washington: Forest Service US, Departamento of Agriculture, 1972.

Cita MLA

Viereck, Leslie A., y Elbert Luther 1907-2004 Little. Alaska Trees and Shrubs. Washington: Forest Service US, Departamento of Agriculture, 1972.