Cita APA (7th ed.)

Cooper, S. V., Neiman, K. E., & Roberts, D. W. (1991). Forest habitat types of northern Idaho: A second approximation. Intermountain Research Station.

Cita Chicago (17th ed.)

Cooper, Stephen V., Kenneth E. Neiman, i David W. Roberts. Forest Habitat Types of Northern Idaho: A Second Approximation. Ogden: Intermountain Research Station, 1991.

Cita MLA (9th ed.)

Cooper, Stephen V., et al. Forest Habitat Types of Northern Idaho: A Second Approximation. Intermountain Research Station, 1991.