APA (7th ed.) Citation

Tucker, G. M., Heath, M. F., Socha, C. M., & Heath, M. F. (1994). Birds in Europe: Their conservation status. BirdLife International.

Chicago Style (17th ed.) Citation

Tucker, Graham M., Melanie F. Heath, Caroline M. Socha, and Melanie F. Heath. Birds in Europe: Their Conservation Status. Cambridge: BirdLife International, 1994.

MLA (9th ed.) Citation

Tucker, Graham M., et al. Birds in Europe: Their Conservation Status. BirdLife International, 1994.