APA (7th ed.) Citation

Paralta, E., Carreira, P. M., & Ribeiro, L. F. (2009). Assessing agriculture pollution in the Beja aquifer using nitrogen isotopes, South Portugal.

Chicago Style (17th ed.) Citation

Paralta, Eduardo, Paula M. Carreira, and Luís F. Ribeiro. Assessing Agriculture Pollution in the Beja Aquifer Using Nitrogen Isotopes, South Portugal. 2009.

MLA (8th ed.) Citation

Paralta, Eduardo, et al. Assessing Agriculture Pollution in the Beja Aquifer Using Nitrogen Isotopes, South Portugal. 2009.