APA-Zitierstil (7. Ausg.)

Clark, R. J. (1975). A field study of the short-eared owl, Asio flammeus (Pontoppidan), in North America. Wildlife Soc.

Chicago-Zitierstil (17. Ausg.)

Clark, Richard J. A Field Study of the Short-eared Owl, Asio Flammeus (Pontoppidan), in North America. [Washington, DC]: Wildlife Soc, 1975.

MLA-Zitierstil (9. Ausg.)

Clark, Richard J. A Field Study of the Short-eared Owl, Asio Flammeus (Pontoppidan), in North America. Wildlife Soc, 1975.