APA-Zitierstil (7. Ausg.)

Hayward, G. D., Hayward, P. H., & Garton, E. O. (1993). Ecology of boreal owls in the northern Rocky Mountains, USA. Wildlife Society.

Chicago-Zitierstil (17. Ausg.)

Hayward, Gregory D., Patricia H. Hayward, und Edward O. Garton. Ecology of Boreal Owls in the Northern Rocky Mountains, USA. Bethesda, Md: Wildlife Society, 1993.

MLA-Zitierstil (9. Ausg.)

Hayward, Gregory D., et al. Ecology of Boreal Owls in the Northern Rocky Mountains, USA. Wildlife Society, 1993.