APA (7th ed.) Citation

Venter, Z. S., Aunan, K., Chowdhury, S., & Lelieveld, J. (2020). COVID-19 lockdowns cause global air pollution declines. Proceedings of the National Academy of Sciences - PNAS, 117(32), 18984. https://doi.org/10.1073/pnas.2006853117

Chicago Style (17th ed.) Citation

Venter, Zander S., Kristin Aunan, Sourangsu Chowdhury, and Jos Lelieveld. "COVID-19 Lockdowns Cause Global Air Pollution Declines." Proceedings of the National Academy of Sciences - PNAS 117, no. 32 (2020): 18984. https://doi.org/10.1073/pnas.2006853117.

MLA (9th ed.) Citation

Venter, Zander S., et al. "COVID-19 Lockdowns Cause Global Air Pollution Declines." Proceedings of the National Academy of Sciences - PNAS, vol. 117, no. 32, 2020, p. 18984, https://doi.org/10.1073/pnas.2006853117.