APA (7th ed.) Citation

Riedel, K., Weller, R., & Schrems, O. (1999). Variability of formaldehyde in the Antarctic troposphere.

Chicago Style (17th ed.) Citation

Riedel, K., Rolf Weller, and Otto Schrems. Variability of Formaldehyde in the Antarctic Troposphere. 1999.

MLA (9th ed.) Citation

Riedel, K., et al. Variability of Formaldehyde in the Antarctic Troposphere. 1999.