Cooper, S. V., Neiman, K. E., & Roberts, D. W. (1991). Forest habitat types of northern Idaho: A second approximation. Intermountain Research Station.
Citazione stile Chigago Style (17a edizione)Cooper, Stephen V., Kenneth E. Neiman, e David W. Roberts. Forest Habitat Types of Northern Idaho: A Second Approximation. Ogden: Intermountain Research Station, 1991.
Citatione MLA (9a ed.)Cooper, Stephen V., et al. Forest Habitat Types of Northern Idaho: A Second Approximation. Intermountain Research Station, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.