APA (7th ed.) Citation

Somes, C., Oschlies, A., & Schneider, R. (2013). Nitrogen Isotopes in the Global Ocean.

Chicago Style (17th ed.) Citation

Somes, Christopher, Andreas Oschlies, and Ralph Schneider. Nitrogen Isotopes in the Global Ocean. 2013.

MLA (9th ed.) Citation

Somes, Christopher, et al. Nitrogen Isotopes in the Global Ocean. 2013.