APA (7th ed.) Citation

Silva, M. J., Martins, B., Chaves, M. S., Cardoso, N., & Afonso, A. P. (2009). Adding Geographic Scopes to Web Resources.

Chicago Style (17th ed.) Citation

Silva, Mário J., Bruno Martins, Marcirio Silveira Chaves, Nuno Cardoso, and Ana Paula Afonso. Adding Geographic Scopes to Web Resources. 2009.

MLA (8th ed.) Citation

Silva, Mário J., et al. Adding Geographic Scopes to Web Resources. 2009.