APA (7th ed.) Citation

Agencia Europea de Medio Ambiente, Berge, E., Jol, A., & Kielland, G. (1997). Air pollution in Europe 1997. European Environment Agency.

Chicago Style (17th ed.) Citation

Agencia Europea de Medio Ambiente, Erik Berge, André Jol, and Gabriel Kielland. Air Pollution in Europe 1997. Copenhagen: European Environment Agency, 1997.

MLA (9th ed.) Citation

Agencia Europea de Medio Ambiente, et al. Air Pollution in Europe 1997. European Environment Agency, 1997.