Cita APA (7a ed.)

American Forestry Association & American Forests (Association). (1931). American forests. American Forestry Association.

Cita Chicago Style (17a ed.)

American Forestry Association y American Forests (Association). American Forests. Washington, D.C.: American Forestry Association, 1931.

Cita MLA (8a ed.)

American Forestry Association y American Forests (Association). American Forests. American Forestry Association, 1931.