Cita APA

Arno, S. F., Smith, H. Y., & Krebs, M. A. (1997). Old growth Ponderosa Pine and Western Larch stand structures: Influences of Pre-1900 fires and fire exclusion. Ogden: United States Department of Agriculture.

Citación estilo Chicago

Arno, Stephen F., Helen Y. Smith, and Michael A. Krebs. Old Growth Ponderosa Pine and Western Larch Stand Structures: Influences of Pre-1900 Fires and Fire Exclusion. Ogden: United States Department of Agriculture, 1997.

Cita MLA

Arno, Stephen F., Helen Y. Smith, and Michael A. Krebs. Old Growth Ponderosa Pine and Western Larch Stand Structures: Influences of Pre-1900 Fires and Fire Exclusion. Ogden: United States Department of Agriculture, 1997.