APA-referens (7:e uppl.)

Forsman, E. D., DeStefano, S., Raphael, M. G., & Gutiérrez, R. J. (1996). Demography of the northern spotted owl. Cooper Ornithological Society.

Chicago-referens (17:e uppl.)

Forsman, Eric D., Stephen DeStefano, Martin G. Raphael, och R. J. Gutiérrez. Demography of the Northern Spotted Owl. Lawrence, California, USA: Cooper Ornithological Society, 1996.

MLA-referens (9:e uppl.)

Forsman, Eric D., et al. Demography of the Northern Spotted Owl. Cooper Ornithological Society, 1996.