Forsman, E. D., DeStefano, S., Raphael, M. G., & Gutiérrez, R. J. (1996). Demography of the northern spotted owl. Cooper Ornithological Society.
Citazione stile Chigago Style (17a edizione)Forsman, Eric D., Stephen DeStefano, Martin G. Raphael, e R. J. Gutiérrez. Demography of the Northern Spotted Owl. Lawrence, California, USA: Cooper Ornithological Society, 1996.
Citatione MLA (9a ed.)Forsman, Eric D., et al. Demography of the Northern Spotted Owl. Cooper Ornithological Society, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.