APA (7th ed.) Citation

Timmermann, R., Lemke, P., & Kottmeier, C. (1999). Formation and maintenance of a polynya in the Weddell Sea.

Chicago Style (17th ed.) Citation

Timmermann, R., P. Lemke, and C. Kottmeier. Formation and Maintenance of a Polynya in the Weddell Sea. 1999.

MLA (9th ed.) Citation

Timmermann, R., et al. Formation and Maintenance of a Polynya in the Weddell Sea. 1999.