APA

Arno S. F., Scott J. H. & Hartwell M. G. (1995). Age-class structure of old growth ponderosa pine, douglas-fir stands and its relationship to fire history. Washington: Intermountain Research Station.

Chicago

Arno Stephen F, Scott Joe H and Hartwell Michael G. 1995. Age-class structure of old growth ponderosa pine, douglas-fir stands and its relationship to fire history. Washington: Intermountain Research Station.

Harvard

Arno S. F., Scott J. H. and Hartwell M. G. (1995). Age-class structure of old growth ponderosa pine, douglas-fir stands and its relationship to fire history. Washington: Intermountain Research Station.

MLA

Arno Stephen F, Scott Joe H and Hartwell Michael G. Age-class structure of old growth ponderosa pine, douglas-fir stands and its relationship to fire history. Washington: Intermountain Research Station. 1995.