Cita APA (7a ed.)

Roby, G. A. (1976). Mechanical methods of chaparral modification. Washington, D.C. : U.S. Dept. of Agriculture, Forest Service.

Cita Chicago Style (17a ed.)

Roby, George A. Mechanical Methods of Chaparral Modification. Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1976.

Cita MLA (8a ed.)

Roby, George A. Mechanical Methods of Chaparral Modification. Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1976.

Cita IICA/CATIE

Roby, G. A. 1976. Mechanical methods of chaparral modification. Washington, D.C. : U.S. Dept. of Agriculture, Forest Service.