Cita APA

Burfield, I., Bommel, F. v., Gallo-Orsi, U., & Nagy, S. (2004). Birds in Europe: Population estimates, trends and conservation status. Cambridge: BirdLife International.

Citación estilo Chicago

Burfield, Ian., Franz van Bommel, Umberto Gallo-Orsi, and Szabolcs Nagy. Birds in Europe: Population Estimates, Trends and Conservation Status. Cambridge: BirdLife International, 2004.

Cita MLA

Burfield, Ian., Franz van Bommel, Umberto Gallo-Orsi, and Szabolcs Nagy. Birds in Europe: Population Estimates, Trends and Conservation Status. Cambridge: BirdLife International, 2004.

Warning: These citations may not always be 100% accurate.